{ "data": { "a": { "slug": "cloudflare-email-service", "name": "Cloudflare Email Service", "vendor": "Cloudflare", "vendorUrl": "https://developers.cloudflare.com/email-service/", "kind": "http-api", "category": "email", "summary": "Cloudflare Email Service sends transactional email through a REST API, a Workers binding or SMTP, and routes inbound mail to Workers or verified addresses. Email Sending is in public beta and needs the Workers Paid plan for arbitrary recipients.", "url": "https://www.anchorterminal.com/tools/cloudflare-email-service", "markdownUrl": "https://www.anchorterminal.com/tools/cloudflare-email-service.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/cloudflare-email-service.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/cloudflare-email-service.json", "license": "Proprietary service under Cloudflare's Self-Serve Subscription Agreement and Developer Platform service-specific terms. The official `cloudflare` SDK on npm is Apache-2.0", "transports": [ "http" ], "remoteUrl": "https://api.cloudflare.com/client/v4", "packages": [ { "registry": "npm", "name": "cloudflare" }, { "registry": "pypi", "name": "cloudflare" } ], "auth": "api-key", "authNotes": "A Cloudflare API token as a Bearer header, created by the account owner in the dashboard. The SMTP guide names the permission Email Sending: Edit, and the OpenAPI file lists `com.cloudflare.api.account.email.sending.create` for sends and `.read` for limits and reputation. Tokens can carry an expiry and an IP address filter. The same token is the SMTP password. The OpenAPI file also accepts the legacy global API key. Access is self-serve, but the sending domain must be on Cloudflare DNS and new accounts start with a daily quota that Cloudflare raises over time.", "pricing": "usage", "pricingNotes": "$0.35 per 1,000 outbound emails after 3,000 included a month, on the Workers Paid plan (minimum $5 a month). Sending to arbitrary recipients is not available on Workers Free. Sends to the account's own verified destination addresses are free on every plan, and inbound Email Routing is free and unmetered. Hard bounces count towards the quota. Sends rejected at the API boundary or by the suppression list don't (https://developers.cloudflare.com/email-service/platform/pricing/).", "priceSummary": "$5 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the Email Service docs, the pricing page or the Email Sending paths of the OpenAPI file (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": 3766696, "pypiWeekly": 363923, "asOf": "2026-10-08" }, "docsUrl": "https://developers.cloudflare.com/email-service/", "llmsTxt": "https://developers.cloudflare.com/email-service/llms.txt", "openapi": "https://raw.githubusercontent.com/cloudflare/api-schemas/main/openapi.json", "capabilities": [ "email.send", "email.inbound", "email.domains", "email.analytics" ], "tags": [ "hosted", "usage", "beta", "openapi", "llms-txt", "smtp", "typescript", "python", "go", "graphql", "status-page", "bug-bounty" ], "lastRelease": "2026-09-25", "graded": true, "anchor": { "graded": true, "score": 67.3, "grade": "B", "agentReady": false, "rank": 212, "ranked": true, "rankOf": 722, "categoryRank": 4, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 72, "maintenance": 81, "payments": 30, "reliability": 51, "schema": 89, "security": 77, "transparency": 76 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "Cloudflare API tokens can be limited to sending, given an expiry and restricted by IP address, and a public OpenAPI file covers 29 Email Sending operations. Sending is still in beta, with no SLA, no idempotency key and no published daily quota, and it needs a domain on Cloudflare DNS and the Workers Paid plan.", "bestFor": "Teams already on Cloudflare DNS and Workers that want transactional sending and inbound handling in one account at a low unit price.", "strengths": [ "Public OpenAPI 3.0.3 file with 29 Email Sending and 46 Email Routing operations, plus llms.txt and a Markdown copy of every docs page", "$0.35 per 1,000 emails after 3,000 included a month on Workers Paid. Sends rejected at the API boundary or blocked by the suppression list don't count", "API tokens carry separate send and read permissions, an optional expiry and an IP address filter, and Workers bindings can be limited to named senders and recipients", "The Cloudflare API returns 429 with `retry-after` and `Ratelimit` headers, and the send endpoint has its own throttled error code 10004", "Email Sending and Email Routing are separate components on cloudflarestatus.com, and the changelog has four dated entries since 15 July 2026" ], "weaknesses": [ "Email Sending has been in public beta since 16 April 2026. Cloudflare's terms let it remove a beta service at any time, and no SLA was found", "No idempotency key on `/email/sending/send`, in the docs or the OpenAPI file", "The daily sending quota for new accounts is described as conservative with no number. It can be read per account from `/email/sending/limits`", "The sending domain must use Cloudflare DNS, and sending to arbitrary recipients needs the Workers Paid plan at $5 a month", "A token with the send permission can send from every onboarded domain on the account. No per-domain token scope was found", "No template storage, and the terms and FAQ allow transactional email only" ], "agentNotes": [ "POST to `https://api.cloudflare.com/client/v4/accounts/{account_id}/email/sending/send` with `Authorization: Bearer \u003ctoken\u003e`. The body needs `to`, `from`, `subject` and one of `html` or `text`", "Don't retry a timed-out send blindly. There is no idempotency key, so look for the message in the `emailSendingAdaptive` GraphQL dataset first", "On 429 (code 10004) wait for the `retry-after` header. On 409 `sending_not_ready` the domain setup is unfinished and nothing was sent", "Read `result.delivered`, `result.queued` and `result.permanent_bounces` in the response. A 200 does not mean every recipient was accepted", "Keep to 50 recipients across to, cc and bcc, and 5 MiB per message including attachments", "For SMTP use `smtp.mx.cloudflare.net` on port 465 with implicit TLS, username `api_token` and the API token as password. Port 587 is not supported", "By default one suppressed recipient fails the whole send. Turn on Drop suppressed recipients for the domain to send to the rest" ], "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": 67.3 } ], "editorialScores": { "ergonomics": 72, "maintenance": 81, "payments": 30, "reliability": 51, "schema": 89, "security": 77, "transparency": 57 }, "provenanceScore": 95 }, "connect": { "http": "curl \"https://api.cloudflare.com/client/v4/accounts/{account_id}/email/sending/send\" \\\n --header \"Authorization: Bearer \u003cAPI_TOKEN\u003e\" \\\n --header \"Content-Type: application/json\" \\\n --data '{\"to\":\"recipient@example.com\",\"from\":\"welcome@yourdomain.com\",\"subject\":\"Welcome to our service!\",\"html\":\"\u003ch1\u003eWelcome!\u003c/h1\u003e\u003cp\u003eThanks for signing up.\u003c/p\u003e\",\"text\":\"Welcome! Thanks for signing up.\"}'" }, "letme": { "capability": "https://letme.dev/email.send", "tool": "https://letme.dev/cloudflare-email-service" }, "sameCompany": [ "cloudflare-sandbox-sdk", "cloudflare-web-search", "cloudflare-mcp", "cloudflare-r2", "cloudflare-clef" ], "area": "communication", "unitPrices": [ { "item": "Outbound email", "unit": "1k-emails", "usd": 0.35, "note": "After 3,000 included a month, Workers Paid plan only. Sends to verified destination addresses are free" }, { "item": "Workers Paid plan", "unit": "month", "usd": 5, "note": "Minimum monthly charge for the plan that Email Sending to arbitrary recipients needs" } ], "provenance": { "legalEntity": "Cloudflare, Inc.", "domain": "cloudflare.com", "domainRegistered": "2009-02-17", "endpointOnVendorDomain": true, "terms": "https://www.cloudflare.com/terms/", "privacy": "https://www.cloudflare.com/privacypolicy/", "statusPage": "https://www.cloudflarestatus.com", "changelog": "https://developers.cloudflare.com/changelog/product/email-service/", "securityTxt": "valid", "checked": "2026-10-08", "notes": [ "Terms are the Self-Serve Subscription Agreement, last updated 12 September 2025, which names Cloudflare, Inc. at 101 Townsend St, San Francisco. Its section 5 covers beta services.", "The Developer Platform service-specific terms (https://www.cloudflare.com/service-specific-terms-developer-platform/), last updated 28 September 2026, have their own sections for Cloudflare Email Service and Email Routing and supplement the agreement.", "The privacy policy is effective from 4 November 2025 and makes Cloudflare a data processor for customer content that crosses its network. A customer DPA is at https://www.cloudflare.com/cloudflare-customer-dpa/.", "www.cloudflare.com/.well-known/security.txt, read on 8 October 2026, names HackerOne and a disclosure policy and has no Expires field. It is recorded as valid to match the other Cloudflare listings.", "The REST endpoint is on api.cloudflare.com. The SMTP endpoint is on smtp.mx.cloudflare.net, a different registered domain.", "The status page lists Email Sending and Email Routing as separate components, both operational on 8 October 2026.", "RDAP for cloudflare.com gives a registration date of 2009-02-17." ], "score": 95 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/cloudflare-email-service.json", "live": { "slug": "cloudflare-email-service", "probe": { "target": "https://api.cloudflare.com/client/v4", "method": "get", "lastAt": "2026-10-08T21:12:07.608903417Z", "lastOk": true, "lastStatus": 404, "lastMs": 38, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 38, "p95ms24h": 97, "samples24h": 21, "samples30d": 21, "days": [ { "date": "2026-10-08", "probes": 21, "ok": 21 } ] }, "vendorStatus": { "page": "https://www.cloudflarestatus.com", "indicator": "major", "summary": "Partial System Outage", "checkedAt": "2026-10-08T21:05:54.426735933Z" }, "updatedAt": "2026-10-08T21:12:07.608903417Z" } }, "answer": "Cloudflare Email Service scores 67.3 (B) on agent readiness against Mailchimp Transactional (Mandrill)'s 58.1 (C), and leads in 5 of 7 scored categories. Mailchimp Transactional (Mandrill) leads on payments \u0026 pricing.", "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": "Cloudflare", "b": "Intuit Mailchimp", "name": "Vendor" }, { "a": "https://api.cloudflare.com/client/v4", "b": "https://mandrillapp.com/api/1.4", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Pay per use", "b": "Paid", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under Cloudflare's Self-Serve Subscription Agreement and Developer Platform service-specific terms. The official `cloudflare` SDK on npm is Apache-2.0", "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": "none", "b": "9", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-09-25", "b": "2026-03-24", "name": "Last release" }, { "a": "2025-09-12", "b": "no date given", "name": "Terms last updated" }, { "a": "no date given", "b": "2026-03-09", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "yes", "name": "Customer content may train models" }, { "a": "yes", "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": "3.8M npm/wk, 364k PyPI/wk", "b": "226k npm/wk, 132k PyPI/wk", "name": "Popularity" } ], "faq": [ { "answer": "Cloudflare Email Service scores 67.3 (B) on agent readiness against Mailchimp Transactional (Mandrill)'s 58.1 (C), and leads in 5 of 7 scored categories. Mailchimp Transactional (Mandrill) leads on payments \u0026 pricing.", "question": "Which is better for AI agents, Cloudflare Email Service or Mailchimp Transactional (Mandrill)?" }, { "answer": "Both need an API key.", "question": "Do Cloudflare Email Service and Mailchimp Transactional (Mandrill) need an API key?" }, { "answer": "Yes. Cloudflare Email Service has a hosted endpoint at https://api.cloudflare.com/client/v4 and Mailchimp Transactional (Mandrill) at https://mandrillapp.com/api/1.4.", "question": "Can an agent call Cloudflare Email Service and Mailchimp Transactional (Mandrill) without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Schema \u0026 documentation, 89 against 79", "Agent ergonomics, 72 against 60", "Security \u0026 auth, 77 against 68", "Maintenance \u0026 community, 81 against 28", "Transparency \u0026 trust, 76 against 71" ], "also": null, "goodFor": "Teams already on Cloudflare DNS and Workers that want transactional sending and inbound handling in one account at a low unit price.", "slug": "cloudflare-email-service", "watchFor": "Email Sending has been in public beta since 16 April 2026. Cloudflare's terms let it remove a beta service at any time, and no SLA was found" }, { "aheadOn": [ "Payments \u0026 pricing, 35 against 30" ], "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-cloudflare-email-service.json", "title": "Amazon SES vs Cloudflare Email Service", "url": "https://www.anchorterminal.com/compare/amazon-ses-vs-cloudflare-email-service" }, { "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-cloudflare-email-service.json", "title": "Brevo API + MCP vs Cloudflare Email Service", "url": "https://www.anchorterminal.com/compare/brevo-vs-cloudflare-email-service" }, { "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-loops.json", "title": "Cloudflare Email Service vs Loops API + MCP", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-loops" }, { "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-mailgun.json", "title": "Cloudflare Email Service vs Mailgun API + MCP", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailgun" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailjet.json", "title": "Cloudflare Email Service vs Mailjet API + MCP", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailjet" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailtrap.json", "title": "Cloudflare Email Service vs Mailtrap Email API + MCP", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailtrap" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-postmark.json", "title": "Cloudflare Email Service vs Postmark API + MCP", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-postmark" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-resend.json", "title": "Cloudflare Email Service vs Resend API + MCP", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-resend" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-sendgrid.json", "title": "Cloudflare Email Service vs Twilio SendGrid", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-sendgrid" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-smtp2go.json", "title": "Cloudflare Email Service vs SMTP2GO API + MCP", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-smtp2go" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-zoho-zeptomail.json", "title": "Cloudflare Email Service vs Zoho CPaaS (formerly ZeptoMail)", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-zoho-zeptomail" }, { "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-mandrill.json", "title": "MailerSend vs Mailchimp Transactional (Mandrill)", "url": "https://www.anchorterminal.com/compare/mailersend-vs-mandrill" }, { "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": 2, "cloudflare-email-service": 51, "edge": "mandrill", "key": "reliability", "mandrill": 53, "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 10, "cloudflare-email-service": 89, "edge": "cloudflare-email-service", "key": "schema", "mandrill": 79, "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 12, "cloudflare-email-service": 72, "edge": "cloudflare-email-service", "key": "ergonomics", "mandrill": 60, "name": "Agent ergonomics", "weight": 13 }, { "by": 9, "cloudflare-email-service": 77, "edge": "cloudflare-email-service", "key": "security", "mandrill": 68, "name": "Security \u0026 auth", "weight": 14 }, { "by": 5, "cloudflare-email-service": 30, "edge": "mandrill", "key": "payments", "mandrill": 35, "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 53, "cloudflare-email-service": 81, "edge": "cloudflare-email-service", "key": "maintenance", "mandrill": 28, "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 5, "cloudflare-email-service": 76, "edge": "cloudflare-email-service", "key": "transparency", "mandrill": 71, "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Cloudflare Email Service scores 67.3 (B) on agent readiness against Mailchimp Transactional (Mandrill)'s 58.1 (C), and leads in 5 of 7 scored categories. Mailchimp Transactional (Mandrill) leads on payments \u0026 pricing. Both do email send.", "verdicts": { "cloudflare-email-service": "Cloudflare API tokens can be limited to sending, given an expiry and restricted by IP address, and a public OpenAPI file covers 29 Email Sending operations. Sending is still in beta, with no SLA, no idempotency key and no published daily quota, and it needs a domain on Cloudflare DNS and the Workers Paid plan.", "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/cloudflare-email-service-vs-mandrill", "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mandrill.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mandrill.md", "slim": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mandrill.min.md" }, "markdown": "Cloudflare Email Service scores 67.3 (B) on agent readiness against Mailchimp Transactional (Mandrill)'s 58.1 (C), and leads in 5 of 7 scored categories. Mailchimp Transactional (Mandrill) leads on payments \u0026 pricing. Both do email send.\n\n- Cloudflare Email Service: grade B, 67.3/100, rank #212 of 722. Markdown https://www.anchorterminal.com/tools/cloudflare-email-service.md · JSON https://www.anchorterminal.com/api/v1/tools/cloudflare-email-service.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### Cloudflare Email Service (B)\n\nGood for: Teams already on Cloudflare DNS and Workers that want transactional sending and inbound handling in one account at a low unit price.\n\nAhead on:\n- Schema \u0026 documentation, 89 against 79\n- Agent ergonomics, 72 against 60\n- Security \u0026 auth, 77 against 68\n- Maintenance \u0026 community, 81 against 28\n- Transparency \u0026 trust, 76 against 71\n\nWatch for: Email Sending has been in public beta since 16 April 2026. Cloudflare's terms let it remove a beta service at any time, and no SLA was found\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- Payments \u0026 pricing, 35 against 30\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 | Cloudflare Email Service | Mailchimp Transactional (Mandrill) | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 51 | 53 | Mailchimp Transactional (Mandrill) +2 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 89 | 79 | Cloudflare Email Service +10 |\n| Agent ergonomics | 13% (16.2 this run) | 72 | 60 | Cloudflare Email Service +12 |\n| Security \u0026 auth | 14% (17.5 this run) | 77 | 68 | Cloudflare Email Service +9 |\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) | 81 | 28 | Cloudflare Email Service +53 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 76 | 71 | Cloudflare Email Service +5 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **67.3 · B** | **58.1 · C** | |\n\n## Facts side by side\n\n| Fact | Cloudflare Email Service | Mailchimp Transactional (Mandrill) |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Cloudflare | Intuit Mailchimp |\n| Hosted endpoint | `https://api.cloudflare.com/client/v4` | `https://mandrillapp.com/api/1.4` |\n| Transports | HTTP | HTTP |\n| Auth | API key | API key |\n| Pricing | Pay per use | Paid |\n| x402 | no | no |\n| Licence | Proprietary service under Cloudflare's Self-Serve Subscription Agreement and Developer Platform service-specific terms. The official `cloudflare` SDK on npm is Apache-2.0 | 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 | none | 9 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-09-25 | 2026-03-24 |\n| Terms last updated | 2025-09-12 | no date given |\n| Privacy policy last updated | no date given | 2026-03-09 |\n| Customer content may train models | not found in the text | yes |\n| Terms restrict automated access | yes | 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 | 3.8M npm/wk, 364k PyPI/wk | 226k npm/wk, 132k PyPI/wk |\n\n## Verdicts\n\n**Cloudflare Email Service.** Cloudflare API tokens can be limited to sending, given an expiry and restricted by IP address, and a public OpenAPI file covers 29 Email Sending operations. Sending is still in beta, with no SLA, no idempotency key and no published daily quota, and it needs a domain on Cloudflare DNS and the Workers Paid plan.\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### Cloudflare Email Service\n\n1. POST to `https://api.cloudflare.com/client/v4/accounts/{account_id}/email/sending/send` with `Authorization: Bearer \u003ctoken\u003e`. The body needs `to`, `from`, `subject` and one of `html` or `text`\n2. Don't retry a timed-out send blindly. There is no idempotency key, so look for the message in the `emailSendingAdaptive` GraphQL dataset first\n3. On 429 (code 10004) wait for the `retry-after` header. On 409 `sending_not_ready` the domain setup is unfinished and nothing was sent\n4. Read `result.delivered`, `result.queued` and `result.permanent_bounces` in the response. A 200 does not mean every recipient was accepted\n5. Keep to 50 recipients across to, cc and bcc, and 5 MiB per message including attachments\n6. For SMTP use `smtp.mx.cloudflare.net` on port 465 with implicit TLS, username `api_token` and the API token as password. Port 587 is not supported\n7. By default one suppressed recipient fails the whole send. Turn on Drop suppressed recipients for the domain to send to the rest\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, Cloudflare Email Service or Mailchimp Transactional (Mandrill)?\n\nCloudflare Email Service scores 67.3 (B) on agent readiness against Mailchimp Transactional (Mandrill)'s 58.1 (C), and leads in 5 of 7 scored categories. Mailchimp Transactional (Mandrill) leads on payments \u0026 pricing.\n\n### Do Cloudflare Email Service and Mailchimp Transactional (Mandrill) need an API key?\n\nBoth need an API key.\n\n### Can an agent call Cloudflare Email Service and Mailchimp Transactional (Mandrill) without installing anything?\n\nYes. Cloudflare Email Service has a hosted endpoint at https://api.cloudflare.com/client/v4 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/cloudflare-email-service-vs-mandrill.json, and with the fewest tokens: https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mandrill.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"cloudflare-email-service\", \"b\": \"mandrill\"}`. From a terminal: `anchor compare cloudflare-email-service mandrill`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/cloudflare-email-service.json and https://www.anchorterminal.com/api/v1/tools/mandrill.json\n\n## Other comparisons with Cloudflare Email Service or Mailchimp Transactional (Mandrill)\n\n- [Amazon SES vs Cloudflare Email Service](https://www.anchorterminal.com/compare/amazon-ses-vs-cloudflare-email-service.md)\n- [Amazon SES vs Mailchimp Transactional (Mandrill)](https://www.anchorterminal.com/compare/amazon-ses-vs-mandrill.md)\n- [Brevo API + MCP vs Cloudflare Email Service](https://www.anchorterminal.com/compare/brevo-vs-cloudflare-email-service.md)\n- [Brevo API + MCP vs Mailchimp Transactional (Mandrill)](https://www.anchorterminal.com/compare/brevo-vs-mandrill.md)\n- [Cloudflare Email Service vs Loops API + MCP](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-loops.md)\n- [Cloudflare Email Service vs MailerSend](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailersend.md)\n- [Cloudflare Email Service vs Mailgun API + MCP](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailgun.md)\n- [Cloudflare Email Service vs Mailjet API + MCP](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailjet.md)\n- [Cloudflare Email Service vs Mailtrap Email API + MCP](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailtrap.md)\n- [Cloudflare Email Service vs Postmark API + MCP](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-postmark.md)\n- [Cloudflare Email Service vs Resend API + MCP](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-resend.md)\n- [Cloudflare Email Service vs Twilio SendGrid](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-sendgrid.md)\n- [Cloudflare Email Service vs SMTP2GO API + MCP](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-smtp2go.md)\n- [Cloudflare Email Service vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-zoho-zeptomail.md)\n- [Loops API + MCP vs Mailchimp Transactional (Mandrill)](https://www.anchorterminal.com/compare/loops-vs-mandrill.md)\n- [MailerSend vs Mailchimp Transactional (Mandrill)](https://www.anchorterminal.com/compare/mailersend-vs-mandrill.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", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-08", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Cloudflare Email Service vs Mailchimp Transactional (Mandrill)", "url": "" } ], "description": "Cloudflare Email Service scores 67.3 (B) on agent readiness against Mailchimp Transactional (Mandrill)'s 58.1 (C), and leads in 5 of 7 scored categories. Mailchimp Transactional (Mandrill) leads on payments \u0026 pricing. Both do email send. Category scores, facts, verdicts and…", "facts": [ "Cloudflare Email Service B 67.3", "Mailchimp Transactional (Mandrill) C 58.1", "scores" ], "h1": "Cloudflare Email Service vs Mailchimp Transactional (Mandrill)", "image": "https://www.anchorterminal.com/assets/og/compare-cloudflare-email-service-vs-mandrill.png", "path": "/compare/cloudflare-email-service-vs-mandrill", "published": "2026-10-01", "section": "tools", "title": "Cloudflare Email Service vs Mailchimp Transactional (Mandrill)", "toc": null, "updated": "2026-10-08", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mandrill" }, "tokens": { "markdown": 2900, "slim": 730 }, "version": 1 }