{
  "data": {
    "a": {
      "slug": "mailersend",
      "name": "MailerSend",
      "vendor": "MailerSend, Inc.",
      "vendorUrl": "https://www.mailersend.com",
      "kind": "http-api",
      "category": "email",
      "summary": "Transactional email service from MailerSend, Inc. with a REST API, SMTP relay, templates, inbound routing, webhooks and analytics, plus SMS and WhatsApp sending. Agents reach it with a scoped API token or through a hosted MCP server.",
      "url": "https://www.anchorterminal.com/tools/mailersend",
      "markdownUrl": "https://www.anchorterminal.com/tools/mailersend.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/mailersend.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/mailersend.json",
      "repo": "https://github.com/mailersend/mailersend-nodejs",
      "license": "Proprietary service under MailerSend's terms of use. The SDKs and the CLI on GitHub are MIT",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.mailersend.com/v1",
      "packages": [
        {
          "registry": "npm",
          "name": "mailersend"
        },
        {
          "registry": "pypi",
          "name": "mailersend"
        }
      ],
      "auth": "mixed",
      "authNotes": "The REST API takes a Bearer API token, created in the dashboard or through /v1/token, with any of 30 scopes and an optional sending domain. Tokens can be paused and deleted. SMTP relay uses separate SMTP users. The MCP server and the CLI use OAuth with a browser login, and the MCP authorisation server supports dynamic client registration and PKCE. Access is self-serve, but a new account passes an approval step before full sending.",
      "pricing": "freemium",
      "pricingNotes": "Free plan with 500 emails a month and 100 API requests a day, which the pricing FAQ says needs a card once the account is approved. A 14-day Professional trial starts at signup with the same limits. Hobby is $7 a month for 5,000 emails, Starter from $35 for 50,000 and Professional from $110 for 50,000, with overage of $0.50 to $1.50 per 1,000. Yearly billing takes 10 per cent off. Enterprise is priced by sales (https://www.mailersend.com/pricing, checked 2026-10-08).",
      "priceSummary": "$7 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the developer docs, the OpenAPI file or the pricing page (checked 2026-10-08).",
        "endpoints": []
      },
      "toolCount": 127,
      "popularity": {
        "githubStars": 175,
        "npmWeekly": 128453,
        "pypiWeekly": 15086,
        "asOf": "2026-10-08"
      },
      "docsUrl": "https://developers.mailersend.com",
      "llmsTxt": "https://developers.mailersend.com/llms.txt",
      "openapi": "https://api.swaggerhub.com/apis/MailerSend/mailersend-api/1.0.0-oas3.1",
      "capabilities": [
        "email.send",
        "email.inbound",
        "email.templates",
        "email.domains",
        "email.analytics",
        "email.verification",
        "email.threads",
        "messaging.sms",
        "messaging.whatsapp"
      ],
      "tags": [
        "hosted",
        "freemium",
        "mcp",
        "oauth",
        "openapi",
        "llms-txt",
        "typescript",
        "python",
        "webhooks",
        "sms",
        "whatsapp",
        "status-page",
        "sla"
      ],
      "lastRelease": "2026-09-29",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 69.5,
        "grade": "B",
        "agentReady": false,
        "rank": 156,
        "ranked": true,
        "rankOf": 722,
        "categoryRank": 3,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 69,
          "maintenance": 83,
          "payments": 30,
          "reliability": 95,
          "schema": 73,
          "security": 62,
          "transparency": 64
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-08"
        },
        "negative": 0,
        "verdict": "API tokens carry any of 30 scopes and can be tied to one domain, rate limits are published with retry-after on every 429, and a 99.5 per cent SLA starts on the $35 Starter plan. Sends take no idempotency key, the Free plan allows 100 API requests a day, and the terms permit changes without notice.",
        "bestFor": "An agent sending transactional email for an owner who wants scoped tokens, a hosted MCP server and low entry prices, with SMS and WhatsApp on the same API.",
        "strengths": [
          "API tokens take any of 30 scopes, read or full by area, and can be limited to one sending domain",
          "Rate limits published per endpoint, with retry-after and x-ratelimit headers on a 429 and a quota endpoint that isn't counted",
          "99.5 per cent monthly uptime SLA with service credits on Starter, Professional and Enterprise",
          "Hosted MCP server at mcp.mailersend.com with OAuth, PKCE and dynamic client registration, on every plan",
          "Overage published per 1,000 emails for each plan, from $1.50 on Hobby to $0.50 at 2 million on Professional"
        ],
        "weaknesses": [
          "No idempotency key documented for POST /v1/email or the bulk endpoint",
          "Free plan is capped at 100 API requests a day and 500 emails a month, and asks for a card after account approval",
          "The terms allow MailerSend to change or end the service and the terms without notice, and to close an account without cause",
          "The MCP server lists 127 tools with no documented toolsets or read-only mode",
          "The public OpenAPI file has one-line summaries, no error responses, and no WhatsApp, DMARC or blocklist monitoring paths",
          "The terms grant MailerSend a licence to use inputs and outputs of its AI functions to improve AI models"
        ],
        "agentNotes": [
          "Send `Authorization: Bearer \u003ctoken\u003e` to https://api.mailersend.com/v1 and ask for a token with only the scopes the task needs, such as `email_full` and `activity_read`",
          "Read the message id from the `x-message-id` response header. POST /v1/email answers 202 with an empty body",
          "Check for a sent message before retrying a send. No idempotency key exists, so a blind retry can deliver twice",
          "On a 429 wait the seconds in `retry-after`. Call GET /v1/api-quota, which isn't counted, to see the daily quota left",
          "Use POST /v1/bulk-email for batches of up to 500 emails. It isn't on the Free plan and takes 10 to 60 requests a minute by plan"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 69.5
          }
        ],
        "editorialScores": {
          "ergonomics": 69,
          "maintenance": 83,
          "payments": 30,
          "reliability": 95,
          "schema": 73,
          "security": 62,
          "transparency": 43
        },
        "provenanceScore": 84
      },
      "connect": {
        "install": "npm install mailersend",
        "http": "curl -X POST https://api.mailersend.com/v1/email -H \"Authorization: Bearer $MAILERSEND_API_TOKEN\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"from\":{\"email\":\"hello@yourdomain.com\"},\"to\":[{\"email\":\"recipient@example.com\"}],\"subject\":\"Hello\",\"text\":\"Hello\"}'",
        "claudeCode": "claude mcp add --transport http mailersend https://mcp.mailersend.com/mcp"
      },
      "letme": {
        "capability": "https://letme.dev/email.send",
        "tool": "https://letme.dev/mailersend"
      },
      "area": "communication",
      "unitPrices": [
        {
          "item": "Hobby",
          "unit": "month",
          "usd": 7,
          "note": "5,000 emails"
        },
        {
          "item": "Starter 50k",
          "unit": "month",
          "usd": 35,
          "note": "50,000 emails"
        },
        {
          "item": "Starter 100k",
          "unit": "month",
          "usd": 68,
          "note": "100,000 emails"
        },
        {
          "item": "Professional 50k",
          "unit": "month",
          "usd": 110,
          "note": "50,000 emails"
        },
        {
          "item": "Professional 100k",
          "unit": "month",
          "usd": 140,
          "note": "100,000 emails"
        },
        {
          "item": "Overage on Hobby",
          "unit": "1k-emails",
          "usd": 1.5
        },
        {
          "item": "Overage on Starter",
          "unit": "1k-emails",
          "usd": 1.3,
          "note": "up to the 100,000 tier, $1.10 at 250,000 and 500,000, $1.00 at 1 million"
        },
        {
          "item": "Overage on Professional",
          "unit": "1k-emails",
          "usd": 1.3,
          "note": "up to the 100,000 tier, falling to $0.50 at 2 million"
        },
        {
          "item": "Email verification credit",
          "unit": "credit",
          "usd": 0.01,
          "note": "1,000 credits for $10, falling to $0.002 at 1 million"
        },
        {
          "item": "Extra sending domain",
          "unit": "month",
          "usd": 4,
          "note": "per domain, Starter and above"
        },
        {
          "item": "SMS phone number",
          "unit": "month",
          "usd": 2,
          "note": "per number, USA and Canada, Starter and above"
        }
      ],
      "provenance": {
        "legalEntity": "MailerSend, Inc.",
        "domain": "mailersend.com",
        "domainRegistered": "2009-11-12",
        "endpointOnVendorDomain": true,
        "terms": "https://www.mailersend.com/legal/terms-of-use",
        "privacy": "https://www.mailersend.com/legal/privacy-policy",
        "statusPage": "https://status.mailersend.com",
        "changelog": "https://www.mailersend.com/whats-new",
        "securityTxt": "none",
        "checked": "2026-10-08",
        "notes": [
          "The terms of use (last updated 5 October 2026) and the privacy policy (last updated 17 September 2026) both name MailerSend, Inc., 228 Park Ave S, PMB 54955, New York, NY 10003-1502. The terms of use are the agreement for the service, with Delaware law.",
          "The API answers at api.mailersend.com and the MCP server at mcp.mailersend.com.",
          "www.mailersend.com/.well-known/security.txt returned 404. The legal index links a responsible disclosure programme page.",
          "The changelog address comes from the site's llms.txt. The page itself was not read, because www.mailersend.com began answering with a Cloudflare bot check during our reads.",
          "RDAP gives 2009-11-12 as the registration date of mailersend.com.",
          "The lead named MailerLite and Vercom as parents. The pages we read name only MailerSend, Inc., so no parent is recorded."
        ],
        "score": 84
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/mailersend.json",
      "live": {
        "slug": "mailersend",
        "probe": {
          "target": "https://api.mailersend.com/v1",
          "method": "get",
          "lastAt": "2026-10-08T21:12:14.585031458Z",
          "lastOk": true,
          "lastStatus": 200,
          "lastMs": 126,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 172,
          "p95ms24h": 281,
          "samples24h": 41,
          "samples30d": 41,
          "days": [
            {
              "date": "2026-10-08",
              "probes": 41,
              "ok": 41
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.mailersend.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-08T21:06:11.791587793Z"
        },
        "pages": [
          {
            "url": "https://www.mailersend.com/whats-new",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-08T18:29:00.187031888Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "573c2146c8b3"
          },
          {
            "url": "https://www.mailersend.com/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-08T18:28:58.024689641Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "c5c6c75fb124"
          },
          {
            "url": "https://www.mailersend.com/legal/privacy-policy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-08T18:28:53.837822012Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "be735fa80c7c"
          },
          {
            "url": "https://www.mailersend.com/legal/terms-of-use",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-08T18:28:56.046015705Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "7fff1960a381"
          }
        ],
        "updatedAt": "2026-10-08T21:12:14.585031458Z"
      }
    },
    "answer": "MailerSend scores 69.5 (B) on agent readiness against Mailchimp Transactional (Mandrill)'s 58.1 (C), and leads in 3 of 7 scored categories. Mailchimp Transactional (Mandrill) leads on schema \u0026 documentation, security \u0026 auth, payments \u0026 pricing and transparency \u0026 trust.",
    "b": {
      "slug": "mandrill",
      "name": "Mailchimp Transactional (Mandrill)",
      "vendor": "Intuit Mailchimp",
      "vendorUrl": "https://mailchimp.com/features/transactional-email/",
      "kind": "http-api",
      "category": "email",
      "summary": "Transactional email service from Intuit Mailchimp, formerly Mandrill. It sends application email and SMS through an HTTP API, SMTP or a hosted MCP server, with templates, inbound routing, webhooks and reporting, as a paid add-on to a Mailchimp plan.",
      "url": "https://www.anchorterminal.com/tools/mandrill",
      "markdownUrl": "https://www.anchorterminal.com/tools/mandrill.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/mandrill.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/mandrill.json",
      "repo": "https://github.com/mailchimp/mailchimp-client-lib-codegen",
      "license": "Proprietary service under Mailchimp's Standard Terms of Use and Additional Terms. The client libraries are under Mailchimp's own client library licence agreement",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://mandrillapp.com/api/1.4",
      "packages": [
        {
          "registry": "npm",
          "name": "@mailchimp/mailchimp_transactional"
        },
        {
          "registry": "pypi",
          "name": "mailchimp-transactional"
        }
      ],
      "auth": "api-key",
      "authNotes": "Self-serve API key, created in the Transactional web app at mandrillapp.com/settings by an Owner or Admin of the Mailchimp account. The key goes in the JSON body of every POST as `key`, and the MCP server takes it as `Authorization: Bearer`. A key can be limited to chosen endpoints and to IP addresses, and a restricted key needs the AI Agents permission group to use the MCP server. Test keys work only in test mode. There is no OAuth for this API.",
      "pricing": "paid",
      "pricingNotes": "$20 per block of 25,000 emails a month for 1 to 20 blocks, falling in steps to $10 at 161 blocks or more, on top of a Standard or Premium Mailchimp marketing plan. Blocks are billed monthly in advance and unused emails do not roll over. A dedicated IP is $29.95 a month. An agent's owner can start without a contract through the demo, which gives 500 emails once to the account's own verified domain on any Mailchimp account, free plan included. Test keys send nothing and cost nothing (https://mailchimp.com/pricing/transactional-email/).",
      "priceSummary": "$29.95 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the developer docs, the OpenAPI file or the pricing page (checked 2026-10-08).",
        "endpoints": []
      },
      "toolCount": 9,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 226039,
        "pypiWeekly": 132016,
        "asOf": "2026-10-08"
      },
      "docsUrl": "https://mailchimp.com/developer/transactional/docs/fundamentals/",
      "llmsTxt": "https://mailchimp.com/developer/transactional/llms.txt",
      "openapi": "https://mailchimp.com/developer/openapi/api-reference-2.json",
      "capabilities": [
        "email.send",
        "email.templates",
        "email.inbound",
        "email.domains",
        "email.analytics"
      ],
      "tags": [
        "hosted",
        "paid",
        "mcp",
        "openapi",
        "llms-txt",
        "api-key",
        "smtp",
        "webhooks",
        "inbound",
        "sandbox",
        "typescript",
        "python",
        "status-page",
        "soc2"
      ],
      "lastRelease": "2026-03-24",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 58.1,
        "grade": "C",
        "agentReady": false,
        "rank": 459,
        "ranked": true,
        "rankOf": 722,
        "categoryRank": 12,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 60,
          "maintenance": 28,
          "payments": 35,
          "reliability": 53,
          "schema": 79,
          "security": 68,
          "transparency": 71
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-08"
        },
        "negative": 0,
        "verdict": "A public OpenAPI 3.1 file covers all 99 operations, the docs serve Markdown and llms.txt, and keys can be limited by endpoint and IP address. Sending needs a Standard or Premium Mailchimp plan plus $20 blocks of 25,000 emails. No send idempotency key or SLA was found, and the newest dated release is from 24 March 2026.",
        "bestFor": "Teams already paying for Mailchimp Standard or Premium that want transactional mail, inbound parsing and an MCP server on the same account.",
        "strengths": [
          "OpenAPI 3.1 file for all 99 operations, with typed error bodies for 401, 402, 404, 422, 429 and 500",
          "Hosted MCP server at `https://mandrillapp.com/mcp` with 9 tools, three of which list, describe and call API endpoints",
          "API keys can be limited to named endpoints and to IP addresses, and test keys send nothing",
          "Every docs page has a Markdown copy at the same URL plus `.md`, with an llms.txt index",
          "Status page lists Mailchimp Transactional as its own component with month-by-month event history"
        ],
        "weaknesses": [
          "Full use needs a Standard or Premium Mailchimp marketing plan in addition to the email blocks",
          "No idempotency key on `/messages/send`, and no `Retry-After` header found in the docs or the specification",
          "Three delivery-delay incidents in September 2026, two of them lasting more than four hours",
          "The newest client library and specification release is 24 March 2026, and the changelog's newest entry is 19 August 2025",
          "The docs give three API version paths (1.0, 1.3 and 1.4), and the llms.txt link to the OpenAPI file returns 404"
        ],
        "agentNotes": [
          "Send every call as POST with the key in the JSON body as `key`. The MCP server takes the same key as `Authorization: Bearer`",
          "Use a test API key while building. Test sends are free, capped at 10,000 a day, and deliver nothing",
          "Verify the sending domain with DKIM and DMARC first. Mail from an unverified domain is rejected with the reason `unsigned`",
          "Keep `/messages/search` under 20 calls a minute and set `limit` (default 100, maximum 1,000). There is no offset, so use an activity export for more",
          "For a restricted key that must also use the MCP server, enable the AI Agents permission group on the key"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "C",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 58.1
          }
        ],
        "editorialScores": {
          "ergonomics": 60,
          "maintenance": 28,
          "payments": 35,
          "reliability": 53,
          "schema": 79,
          "security": 68,
          "transparency": 64
        },
        "provenanceScore": 77
      },
      "connect": {
        "install": "npm install @mailchimp/mailchimp_transactional",
        "http": "curl -sS -X POST \"https://mandrillapp.com/api/1.0/users/ping\" \\\n  --header 'Content-Type: application/json' \\\n  --data-raw '{ \"key\": \"YOUR_API_KEY\" }'",
        "claudeCode": "claude mcp add --transport http mctx-mcp https://mandrillapp.com/mcp \\\n  -H \"Authorization: Bearer YOUR_API_KEY\"",
        "config": {
          "mcpServers": {
            "mctx-mcp": {
              "headers": {
                "Authorization": "Bearer YOUR_API_KEY"
              },
              "type": "http",
              "url": "https://mandrillapp.com/mcp"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/email.send",
        "tool": "https://letme.dev/mandrill"
      },
      "area": "communication",
      "unitPrices": [
        {
          "item": "Email block, 1 to 20 blocks",
          "unit": "1k-emails",
          "usd": 0.8,
          "note": "$20 per block of 25,000 emails, billed monthly, unused emails do not roll over. Needs a Standard or Premium Mailchimp plan"
        },
        {
          "item": "Email block, 21 to 40 blocks",
          "unit": "1k-emails",
          "usd": 0.72,
          "note": "$18 per block of 25,000"
        },
        {
          "item": "Email block, 41 to 80 blocks",
          "unit": "1k-emails",
          "usd": 0.64,
          "note": "$16 per block of 25,000"
        },
        {
          "item": "Email block, 81 to 120 blocks",
          "unit": "1k-emails",
          "usd": 0.56,
          "note": "$14 per block of 25,000"
        },
        {
          "item": "Email block, 121 to 160 blocks",
          "unit": "1k-emails",
          "usd": 0.48,
          "note": "$12 per block of 25,000"
        },
        {
          "item": "Email block, 161 blocks or more",
          "unit": "1k-emails",
          "usd": 0.4,
          "note": "$10 per block of 25,000"
        },
        {
          "item": "Dedicated IP",
          "unit": "month",
          "usd": 29.95
        }
      ],
      "provenance": {
        "legalEntity": "The Rocket Science Group LLC d/b/a Mailchimp",
        "domain": "mailchimp.com",
        "domainRegistered": "2001-06-29",
        "endpointOnVendorDomain": false,
        "terms": "https://mailchimp.com/legal/terms/",
        "privacy": "https://www.intuit.com/privacy/statement/",
        "statusPage": "https://status.mailchimp.com",
        "changelog": "https://mailchimp.com/developer/release-notes/",
        "securityTxt": "valid",
        "checked": "2026-10-08",
        "notes": [
          "The Standard Terms of Use, updated and effective 10 October 2025, name The Rocket Science Group LLC d/b/a Mailchimp, 405 N Angier Ave. NE, Atlanta, Georgia, part of the Intuit group with Intuit Inc. as parent.",
          "Transactional Email is also governed by the section For Transactional Email (formerly Mandrill) of the Additional Terms at https://mailchimp.com/legal/additional-terms/, which the Standard Terms incorporate, and by the API Use Policy updated 1 August 2023.",
          "The privacy field points at the Intuit Global Privacy Statement, last updated 9 March 2026. Mailchimp's terms name it as the privacy document for the service, mailchimp.com/legal/privacy redirects to it, and it names The Rocket Science Group LLC d/b/a Mailchimp. Mailchimp publishes no separate privacy policy.",
          "The API and the MCP server are served from mandrillapp.com, registered 2011-09-01, not from mailchimp.com (RDAP, Verisign).",
          "mailchimp.com/.well-known/security.txt holds one Contact line that points at the responsible disclosure section of the security page, with no Expires field. mandrillapp.com has no security.txt (404).",
          "The changelog covers the Marketing and Transactional APIs together. Its newest entry is dated 19 August 2025."
        ],
        "score": 77
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/mandrill.json",
      "live": {
        "slug": "mandrill",
        "probe": {
          "target": "https://mandrillapp.com/api/1.4",
          "method": "get",
          "lastAt": "2026-10-08T21:12:14.861311294Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 421,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 426,
          "p95ms24h": 456,
          "samples24h": 21,
          "samples30d": 21,
          "days": [
            {
              "date": "2026-10-08",
              "probes": 21,
              "ok": 21
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.mailchimp.com",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-08T19:38:46.313674676Z"
        },
        "updatedAt": "2026-10-08T21:12:14.861311294Z"
      }
    },
    "facts": [
      {
        "a": "HTTP API",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "MailerSend, Inc.",
        "b": "Intuit Mailchimp",
        "name": "Vendor"
      },
      {
        "a": "https://api.mailersend.com/v1",
        "b": "https://mandrillapp.com/api/1.4",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP, Streamable HTTP",
        "b": "HTTP",
        "name": "Transports"
      },
      {
        "a": "OAuth or key",
        "b": "API key",
        "name": "Auth"
      },
      {
        "a": "Freemium",
        "b": "Paid",
        "name": "Pricing"
      },
      {
        "a": "$4 per month (plan)",
        "b": "not published",
        "name": "Price for email send"
      },
      {
        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "Proprietary service under MailerSend's terms of use. The SDKs and the CLI on GitHub are MIT",
        "b": "Proprietary service under Mailchimp's Standard Terms of Use and Additional Terms. The client libraries are under Mailchimp's own client library licence agreement",
        "name": "Licence"
      },
      {
        "a": "127",
        "b": "9",
        "name": "Tools exposed"
      },
      {
        "a": "no",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "2026-09-29",
        "b": "2026-03-24",
        "name": "Last release"
      },
      {
        "a": "2026-10-05",
        "b": "no date given",
        "name": "Terms last updated"
      },
      {
        "a": "2026-09-17",
        "b": "2026-03-09",
        "name": "Privacy policy last updated"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "Customer content may train models"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Terms restrict automated access"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "175 stars, 128k npm/wk, 15k PyPI/wk",
        "b": "226k npm/wk, 132k PyPI/wk",
        "name": "Popularity"
      }
    ],
    "faq": [
      {
        "answer": "MailerSend scores 69.5 (B) on agent readiness against Mailchimp Transactional (Mandrill)'s 58.1 (C), and leads in 3 of 7 scored categories. Mailchimp Transactional (Mandrill) leads on schema \u0026 documentation, security \u0026 auth, payments \u0026 pricing and transparency \u0026 trust.",
        "question": "Which is better for AI agents, MailerSend or Mailchimp Transactional (Mandrill)?"
      },
      {
        "answer": "MailerSend takes an API key or an OAuth sign-in. Mailchimp Transactional (Mandrill) needs an API key.",
        "question": "Do MailerSend and Mailchimp Transactional (Mandrill) need an API key?"
      },
      {
        "answer": "Yes. MailerSend has a hosted endpoint at https://api.mailersend.com/v1 and Mailchimp Transactional (Mandrill) at https://mandrillapp.com/api/1.4.",
        "question": "Can an agent call MailerSend and Mailchimp Transactional (Mandrill) without installing anything?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Reliability, 95 against 53",
          "Agent ergonomics, 69 against 60",
          "Maintenance \u0026 community, 83 against 28"
        ],
        "also": null,
        "goodFor": "An agent sending transactional email for an owner who wants scoped tokens, a hosted MCP server and low entry prices, with SMS and WhatsApp on the same API.",
        "slug": "mailersend",
        "watchFor": "No idempotency key documented for POST /v1/email or the bulk endpoint"
      },
      {
        "aheadOn": [
          "Schema \u0026 documentation, 79 against 73",
          "Security \u0026 auth, 68 against 62",
          "Payments \u0026 pricing, 35 against 30",
          "Transparency \u0026 trust, 71 against 64"
        ],
        "also": null,
        "goodFor": "Teams already paying for Mailchimp Standard or Premium that want transactional mail, inbound parsing and an MCP server on the same account.",
        "slug": "mandrill",
        "watchFor": "Full use needs a Standard or Premium Mailchimp marketing plan in addition to the email blocks"
      }
    ],
    "job": {
      "capability": "email.send",
      "name": "Email send"
    },
    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/amazon-ses-vs-mailersend.json",
        "title": "Amazon SES vs MailerSend",
        "url": "https://www.anchorterminal.com/compare/amazon-ses-vs-mailersend"
      },
      {
        "json": "https://www.anchorterminal.com/compare/amazon-ses-vs-mandrill.json",
        "title": "Amazon SES vs Mailchimp Transactional (Mandrill)",
        "url": "https://www.anchorterminal.com/compare/amazon-ses-vs-mandrill"
      },
      {
        "json": "https://www.anchorterminal.com/compare/brevo-vs-mailersend.json",
        "title": "Brevo API + MCP vs MailerSend",
        "url": "https://www.anchorterminal.com/compare/brevo-vs-mailersend"
      },
      {
        "json": "https://www.anchorterminal.com/compare/brevo-vs-mandrill.json",
        "title": "Brevo API + MCP vs Mailchimp Transactional (Mandrill)",
        "url": "https://www.anchorterminal.com/compare/brevo-vs-mandrill"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailersend.json",
        "title": "Cloudflare Email Service vs MailerSend",
        "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailersend"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mandrill.json",
        "title": "Cloudflare Email Service vs Mailchimp Transactional (Mandrill)",
        "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mandrill"
      },
      {
        "json": "https://www.anchorterminal.com/compare/loops-vs-mailersend.json",
        "title": "Loops API + MCP vs MailerSend",
        "url": "https://www.anchorterminal.com/compare/loops-vs-mailersend"
      },
      {
        "json": "https://www.anchorterminal.com/compare/loops-vs-mandrill.json",
        "title": "Loops API + MCP vs Mailchimp Transactional (Mandrill)",
        "url": "https://www.anchorterminal.com/compare/loops-vs-mandrill"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mailersend-vs-mailgun.json",
        "title": "MailerSend vs Mailgun API + MCP",
        "url": "https://www.anchorterminal.com/compare/mailersend-vs-mailgun"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mailersend-vs-mailjet.json",
        "title": "MailerSend vs Mailjet API + MCP",
        "url": "https://www.anchorterminal.com/compare/mailersend-vs-mailjet"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mailersend-vs-mailtrap.json",
        "title": "MailerSend vs Mailtrap Email API + MCP",
        "url": "https://www.anchorterminal.com/compare/mailersend-vs-mailtrap"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mailersend-vs-postmark.json",
        "title": "MailerSend vs Postmark API + MCP",
        "url": "https://www.anchorterminal.com/compare/mailersend-vs-postmark"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mailersend-vs-resend.json",
        "title": "MailerSend vs Resend API + MCP",
        "url": "https://www.anchorterminal.com/compare/mailersend-vs-resend"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mailersend-vs-sendgrid.json",
        "title": "MailerSend vs Twilio SendGrid",
        "url": "https://www.anchorterminal.com/compare/mailersend-vs-sendgrid"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mailersend-vs-smtp2go.json",
        "title": "MailerSend vs SMTP2GO API + MCP",
        "url": "https://www.anchorterminal.com/compare/mailersend-vs-smtp2go"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mailersend-vs-zoho-zeptomail.json",
        "title": "MailerSend vs Zoho CPaaS (formerly ZeptoMail)",
        "url": "https://www.anchorterminal.com/compare/mailersend-vs-zoho-zeptomail"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mailgun-vs-mandrill.json",
        "title": "Mailgun API + MCP vs Mailchimp Transactional (Mandrill)",
        "url": "https://www.anchorterminal.com/compare/mailgun-vs-mandrill"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mailjet-vs-mandrill.json",
        "title": "Mailjet API + MCP vs Mailchimp Transactional (Mandrill)",
        "url": "https://www.anchorterminal.com/compare/mailjet-vs-mandrill"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mailtrap-vs-mandrill.json",
        "title": "Mailtrap Email API + MCP vs Mailchimp Transactional (Mandrill)",
        "url": "https://www.anchorterminal.com/compare/mailtrap-vs-mandrill"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mandrill-vs-postmark.json",
        "title": "Mailchimp Transactional (Mandrill) vs Postmark API + MCP",
        "url": "https://www.anchorterminal.com/compare/mandrill-vs-postmark"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mandrill-vs-resend.json",
        "title": "Mailchimp Transactional (Mandrill) vs Resend API + MCP",
        "url": "https://www.anchorterminal.com/compare/mandrill-vs-resend"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mandrill-vs-sendgrid.json",
        "title": "Mailchimp Transactional (Mandrill) vs Twilio SendGrid",
        "url": "https://www.anchorterminal.com/compare/mandrill-vs-sendgrid"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mandrill-vs-smtp2go.json",
        "title": "Mailchimp Transactional (Mandrill) vs SMTP2GO API + MCP",
        "url": "https://www.anchorterminal.com/compare/mandrill-vs-smtp2go"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mandrill-vs-zoho-zeptomail.json",
        "title": "Mailchimp Transactional (Mandrill) vs Zoho CPaaS (formerly ZeptoMail)",
        "url": "https://www.anchorterminal.com/compare/mandrill-vs-zoho-zeptomail"
      }
    ],
    "scores": [
      {
        "by": 42,
        "edge": "mailersend",
        "key": "reliability",
        "mailersend": 95,
        "mandrill": 53,
        "name": "Reliability",
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "by": 6,
        "edge": "mandrill",
        "key": "schema",
        "mailersend": 73,
        "mandrill": 79,
        "name": "Schema \u0026 documentation",
        "weight": 13
      },
      {
        "by": 9,
        "edge": "mailersend",
        "key": "ergonomics",
        "mailersend": 69,
        "mandrill": 60,
        "name": "Agent ergonomics",
        "weight": 13
      },
      {
        "by": 6,
        "edge": "mandrill",
        "key": "security",
        "mailersend": 62,
        "mandrill": 68,
        "name": "Security \u0026 auth",
        "weight": 14
      },
      {
        "by": 5,
        "edge": "mandrill",
        "key": "payments",
        "mailersend": 30,
        "mandrill": 35,
        "name": "Payments \u0026 pricing",
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "by": 55,
        "edge": "mailersend",
        "key": "maintenance",
        "mailersend": 83,
        "mandrill": 28,
        "name": "Maintenance \u0026 community",
        "weight": 7
      },
      {
        "by": 7,
        "edge": "mandrill",
        "key": "transparency",
        "mailersend": 64,
        "mandrill": 71,
        "name": "Transparency \u0026 trust",
        "weight": 7
      }
    ],
    "summary": "MailerSend scores 69.5 (B) on agent readiness against Mailchimp Transactional (Mandrill)'s 58.1 (C), and leads in 3 of 7 scored categories. Mailchimp Transactional (Mandrill) leads on schema \u0026 documentation, security \u0026 auth, payments \u0026 pricing and transparency \u0026 trust. Both do email send.",
    "verdicts": {
      "mailersend": "API tokens carry any of 30 scopes and can be tied to one domain, rate limits are published with retry-after on every 429, and a 99.5 per cent SLA starts on the $35 Starter plan. Sends take no idempotency key, the Free plan allows 100 API requests a day, and the terms permit changes without notice.",
      "mandrill": "A public OpenAPI 3.1 file covers all 99 operations, the docs serve Markdown and llms.txt, and keys can be limited by endpoint and IP address. Sending needs a Standard or Premium Mailchimp plan plus $20 blocks of 25,000 emails. No send idempotency key or SLA was found, and the newest dated release is from 24 March 2026."
    }
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/mailersend-vs-mandrill",
    "json": "https://www.anchorterminal.com/compare/mailersend-vs-mandrill.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/mailersend-vs-mandrill.md",
    "slim": "https://www.anchorterminal.com/compare/mailersend-vs-mandrill.min.md"
  },
  "markdown": "MailerSend scores 69.5 (B) on agent readiness against Mailchimp Transactional (Mandrill)'s 58.1 (C), and leads in 3 of 7 scored categories. Mailchimp Transactional (Mandrill) leads on schema \u0026 documentation, security \u0026 auth, payments \u0026 pricing and transparency \u0026 trust. Both do email send.\n\n- MailerSend: grade B, 69.5/100, rank #156 of 722. Markdown https://www.anchorterminal.com/tools/mailersend.md · JSON https://www.anchorterminal.com/api/v1/tools/mailersend.json\n- Mailchimp Transactional (Mandrill): grade C, 58.1/100, rank #459 of 722. Markdown https://www.anchorterminal.com/tools/mandrill.md · JSON https://www.anchorterminal.com/api/v1/tools/mandrill.json\n\n## Which one, for what\n\n### MailerSend (B)\n\nGood for: An agent sending transactional email for an owner who wants scoped tokens, a hosted MCP server and low entry prices, with SMS and WhatsApp on the same API.\n\nAhead on:\n- Reliability, 95 against 53\n- Agent ergonomics, 69 against 60\n- Maintenance \u0026 community, 83 against 28\n\nWatch for: No idempotency key documented for POST /v1/email or the bulk endpoint\n\n### Mailchimp Transactional (Mandrill) (C)\n\nGood for: Teams already paying for Mailchimp Standard or Premium that want transactional mail, inbound parsing and an MCP server on the same account.\n\nAhead on:\n- Schema \u0026 documentation, 79 against 73\n- Security \u0026 auth, 68 against 62\n- Payments \u0026 pricing, 35 against 30\n- Transparency \u0026 trust, 71 against 64\n\nWatch for: Full use needs a Standard or Premium Mailchimp marketing plan in addition to the email blocks\n\n\n## Score by category\n\n| Category | Weight | MailerSend | Mailchimp Transactional (Mandrill) | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 95 | 53 | MailerSend +42 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 73 | 79 | Mailchimp Transactional (Mandrill) +6 |\n| Agent ergonomics | 13% (16.2 this run) | 69 | 60 | MailerSend +9 |\n| Security \u0026 auth | 14% (17.5 this run) | 62 | 68 | Mailchimp Transactional (Mandrill) +6 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 35 | Mailchimp Transactional (Mandrill) +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 83 | 28 | MailerSend +55 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 64 | 71 | Mailchimp Transactional (Mandrill) +7 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **69.5 · B** | **58.1 · C** | |\n\n## Facts side by side\n\n| Fact | MailerSend | Mailchimp Transactional (Mandrill) |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | MailerSend, Inc. | Intuit Mailchimp |\n| Hosted endpoint | `https://api.mailersend.com/v1` | `https://mandrillapp.com/api/1.4` |\n| Transports | HTTP, Streamable HTTP | HTTP |\n| Auth | OAuth or key | API key |\n| Pricing | Freemium | Paid |\n| Price for email send | $4 per month (plan) | not published |\n| x402 | no | no |\n| Licence | Proprietary service under MailerSend's terms of use. The SDKs and the CLI on GitHub are MIT | Proprietary service under Mailchimp's Standard Terms of Use and Additional Terms. The client libraries are under Mailchimp's own client library licence agreement |\n| Tools exposed | 127 | 9 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-09-29 | 2026-03-24 |\n| Terms last updated | 2026-10-05 | no date given |\n| Privacy policy last updated | 2026-09-17 | 2026-03-09 |\n| Customer content may train models | yes | yes |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | not found in the text | not found in the text |\n| Terms or service can change without notice | yes | yes |\n| Arbitration or class-action waiver | yes | yes |\n| Popularity | 175 stars, 128k npm/wk, 15k PyPI/wk | 226k npm/wk, 132k PyPI/wk |\n\n## Verdicts\n\n**MailerSend.** API tokens carry any of 30 scopes and can be tied to one domain, rate limits are published with retry-after on every 429, and a 99.5 per cent SLA starts on the $35 Starter plan. Sends take no idempotency key, the Free plan allows 100 API requests a day, and the terms permit changes without notice.\n\n**Mailchimp Transactional (Mandrill).** A public OpenAPI 3.1 file covers all 99 operations, the docs serve Markdown and llms.txt, and keys can be limited by endpoint and IP address. Sending needs a Standard or Premium Mailchimp plan plus $20 blocks of 25,000 emails. No send idempotency key or SLA was found, and the newest dated release is from 24 March 2026.\n\n## Before you call either\n\n### MailerSend\n\n1. Send `Authorization: Bearer \u003ctoken\u003e` to https://api.mailersend.com/v1 and ask for a token with only the scopes the task needs, such as `email_full` and `activity_read`\n2. Read the message id from the `x-message-id` response header. POST /v1/email answers 202 with an empty body\n3. Check for a sent message before retrying a send. No idempotency key exists, so a blind retry can deliver twice\n4. On a 429 wait the seconds in `retry-after`. Call GET /v1/api-quota, which isn't counted, to see the daily quota left\n5. Use POST /v1/bulk-email for batches of up to 500 emails. It isn't on the Free plan and takes 10 to 60 requests a minute by plan\n\n### Mailchimp Transactional (Mandrill)\n\n1. Send every call as POST with the key in the JSON body as `key`. The MCP server takes the same key as `Authorization: Bearer`\n2. Use a test API key while building. Test sends are free, capped at 10,000 a day, and deliver nothing\n3. Verify the sending domain with DKIM and DMARC first. Mail from an unverified domain is rejected with the reason `unsigned`\n4. Keep `/messages/search` under 20 calls a minute and set `limit` (default 100, maximum 1,000). There is no offset, so use an activity export for more\n5. For a restricted key that must also use the MCP server, enable the AI Agents permission group on the key\n\n## Questions\n\n### Which is better for AI agents, MailerSend or Mailchimp Transactional (Mandrill)?\n\nMailerSend scores 69.5 (B) on agent readiness against Mailchimp Transactional (Mandrill)'s 58.1 (C), and leads in 3 of 7 scored categories. Mailchimp Transactional (Mandrill) leads on schema \u0026 documentation, security \u0026 auth, payments \u0026 pricing and transparency \u0026 trust.\n\n### Do MailerSend and Mailchimp Transactional (Mandrill) need an API key?\n\nMailerSend takes an API key or an OAuth sign-in. Mailchimp Transactional (Mandrill) needs an API key.\n\n### Can an agent call MailerSend and Mailchimp Transactional (Mandrill) without installing anything?\n\nYes. MailerSend has a hosted endpoint at https://api.mailersend.com/v1 and Mailchimp Transactional (Mandrill) at https://mandrillapp.com/api/1.4.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/mailersend-vs-mandrill.json, and with the fewest tokens: https://www.anchorterminal.com/compare/mailersend-vs-mandrill.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"mailersend\", \"b\": \"mandrill\"}`. From a terminal: `anchor compare mailersend mandrill`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/mailersend.json and https://www.anchorterminal.com/api/v1/tools/mandrill.json\n\n## Other comparisons with MailerSend or Mailchimp Transactional (Mandrill)\n\n- [Amazon SES vs MailerSend](https://www.anchorterminal.com/compare/amazon-ses-vs-mailersend.md)\n- [Amazon SES vs Mailchimp Transactional (Mandrill)](https://www.anchorterminal.com/compare/amazon-ses-vs-mandrill.md)\n- [Brevo API + MCP vs MailerSend](https://www.anchorterminal.com/compare/brevo-vs-mailersend.md)\n- [Brevo API + MCP vs Mailchimp Transactional (Mandrill)](https://www.anchorterminal.com/compare/brevo-vs-mandrill.md)\n- [Cloudflare Email Service vs MailerSend](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailersend.md)\n- [Cloudflare Email Service vs Mailchimp Transactional (Mandrill)](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mandrill.md)\n- [Loops API + MCP vs MailerSend](https://www.anchorterminal.com/compare/loops-vs-mailersend.md)\n- [Loops API + MCP vs Mailchimp Transactional (Mandrill)](https://www.anchorterminal.com/compare/loops-vs-mandrill.md)\n- [MailerSend vs Mailgun API + MCP](https://www.anchorterminal.com/compare/mailersend-vs-mailgun.md)\n- [MailerSend vs Mailjet API + MCP](https://www.anchorterminal.com/compare/mailersend-vs-mailjet.md)\n- [MailerSend vs Mailtrap Email API + MCP](https://www.anchorterminal.com/compare/mailersend-vs-mailtrap.md)\n- [MailerSend vs Postmark API + MCP](https://www.anchorterminal.com/compare/mailersend-vs-postmark.md)\n- [MailerSend vs Resend API + MCP](https://www.anchorterminal.com/compare/mailersend-vs-resend.md)\n- [MailerSend vs Twilio SendGrid](https://www.anchorterminal.com/compare/mailersend-vs-sendgrid.md)\n- [MailerSend vs SMTP2GO API + MCP](https://www.anchorterminal.com/compare/mailersend-vs-smtp2go.md)\n- [MailerSend vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/mailersend-vs-zoho-zeptomail.md)\n- [Mailgun API + MCP vs Mailchimp Transactional (Mandrill)](https://www.anchorterminal.com/compare/mailgun-vs-mandrill.md)\n- [Mailjet API + MCP vs Mailchimp Transactional (Mandrill)](https://www.anchorterminal.com/compare/mailjet-vs-mandrill.md)\n- [Mailtrap Email API + MCP vs Mailchimp Transactional (Mandrill)](https://www.anchorterminal.com/compare/mailtrap-vs-mandrill.md)\n- [Mailchimp Transactional (Mandrill) vs Postmark API + MCP](https://www.anchorterminal.com/compare/mandrill-vs-postmark.md)\n- [Mailchimp Transactional (Mandrill) vs Resend API + MCP](https://www.anchorterminal.com/compare/mandrill-vs-resend.md)\n- [Mailchimp Transactional (Mandrill) vs Twilio SendGrid](https://www.anchorterminal.com/compare/mandrill-vs-sendgrid.md)\n- [Mailchimp Transactional (Mandrill) vs SMTP2GO API + MCP](https://www.anchorterminal.com/compare/mandrill-vs-smtp2go.md)\n- [Mailchimp Transactional (Mandrill) vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/mandrill-vs-zoho-zeptomail.md)\n",
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    "description": "MailerSend scores 69.5 (B) on agent readiness against Mailchimp Transactional (Mandrill)'s 58.1 (C), and leads in 3 of 7 scored categories. Mailchimp Transactional (Mandrill) leads on schema \u0026 documentation, security \u0026 auth, payments \u0026 pricing and transparency \u0026 trust. Both do…",
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