{
  "data": {
    "a": {
      "slug": "agentmail",
      "name": "AgentMail API + MCP",
      "vendor": "AgentMail",
      "vendorUrl": "https://www.agentmail.to",
      "kind": "http-api",
      "category": "agent-inboxes",
      "summary": "Email inboxes for agents over REST.",
      "url": "https://www.anchorterminal.com/tools/agentmail",
      "markdownUrl": "https://www.anchorterminal.com/tools/agentmail.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/agentmail.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/agentmail.json",
      "repo": "https://github.com/agentmail-to/agentmail-mcp",
      "license": "MIT",
      "transports": [
        "http",
        "streamable-http",
        "stdio"
      ],
      "remoteUrl": "https://api.agentmail.to/v0",
      "packages": [
        {
          "registry": "npm",
          "name": "agentmail"
        },
        {
          "registry": "pypi",
          "name": "agentmail"
        },
        {
          "registry": "npm",
          "name": "agentmail-mcp"
        }
      ],
      "auth": "mixed",
      "authNotes": "Bearer API key (`am_...`) for REST, with per-key permissions scoped to pods or inboxes. The hosted MCP uses OAuth through console.agentmail.to, or an `x-api-key` header for clients without OAuth. An agent can sign itself up by API and gets a key back, with full access after a human confirms a 6-digit OTP. x402 base URLs take USDC payment instead of a key.",
      "pricing": "freemium",
      "pricingNotes": "Free plan with 3 inboxes, 3,000 emails a month (100 a day) and 3 GB storage, no card. Developer $20 a month for 10 inboxes, 10,000 emails and 10 custom domains. Startup $200 a month for 150 inboxes, 150,000 emails a month (15,000 a day) and 150 domains. Add-ons are $2 a month per extra inbox or domain and $2 a month per extra 1,000 emails. Yearly billing is 20 per cent off. Over x402, creating an inbox costs $2 in USDC (https://www.agentmail.to/pricing).",
      "priceSummary": "$2 / call",
      "where": "both",
      "x402": {
        "level": "yes",
        "evidence": "Official docs describe x402 base URLs x402.api.agentmail.to and x402.ws.agentmail.to, paid in USDC on Base, Polygon or Solana, with inbox creation priced at $2.00. An unauthenticated POST to x402.api.agentmail.to/v0/inboxes returned HTTP 402 with a v2 payment-required header asking for 2,000,000 USDC base units ($2) on Base, Polygon, Solana, Avalanche and X Layer. The challenge names api.paysponge.com as the resource URL, so a third-party payment layer appears to sit in front of the API (https://docs.agentmail.to/integrations/x402).",
        "endpoints": [
          {
            "url": "https://x402.api.agentmail.to/v0/inboxes",
            "priceUsd": 2,
            "network": "eip155:8453"
          }
        ]
      },
      "toolCount": 36,
      "popularity": {
        "githubStars": 66,
        "npmWeekly": 240222,
        "pypiWeekly": 331643,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.agentmail.to",
      "llmsTxt": "https://docs.agentmail.to/llms.txt",
      "openapi": "https://docs.agentmail.to/openapi.json",
      "registryName": "to.agentmail/agentmail",
      "capabilities": [
        "email.inbox",
        "email.send",
        "email.inbound",
        "email.threads",
        "email.domains",
        "email.analytics"
      ],
      "tags": [
        "hosted",
        "freemium",
        "no-card",
        "mcp",
        "llms-txt",
        "openapi",
        "x402",
        "stablecoin",
        "typescript",
        "python",
        "webhooks"
      ],
      "lastRelease": "2026-09-30",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 74.9,
        "grade": "BB",
        "agentReady": true,
        "rank": 62,
        "ranked": true,
        "rankOf": 950,
        "categoryRank": 1,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 86,
          "maintenance": 85,
          "payments": 85,
          "reliability": 61,
          "schema": 85,
          "security": 62,
          "transparency": 68
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Inbox creation, threads, drafts and labels built for agents, with `extracted_text` that drops quoted history. Email sending was down for 8 hours 7 minutes on 19 August 2026.",
        "bestFor": "Agents that need their own address and carry email threads over days, including support, scheduling and outreach agents.",
        "strengths": [
          "Inbox creation, threads, drafts and labels built for agents, with `extracted_text` that drops quoted history",
          "x402 on its own domain and an agent sign-up API, so an agent can start without a person in a dashboard",
          "Free plan with 3 inboxes and 3,000 emails a month, no card",
          "API keys scoped to pods or inboxes, and OAuth on the hosted MCP server",
          "Privacy policy with retention periods and a no-training statement for email content"
        ],
        "weaknesses": [
          "Email sending was down for 8 hours 7 minutes on 19 August 2026",
          "API request limits aren't published as numbers",
          "The hosted MCP server's 38 tools load at once, with filtering only in the stdio bridges",
          "No read-only mode or confirmation before sends and deletes over MCP",
          "The MCP server accepts the API key as a query parameter"
        ],
        "agentNotes": [
          "Subscribe over WebSocket instead of polling. It needs no public URL and avoids 429s",
          "Pass `client_id` when creating inboxes so retries don't create duplicates",
          "Read `extracted_text` rather than the raw body, and treat it as untrusted input",
          "Use drafts when a person should approve a message before it goes out",
          "Send the key in the `x-api-key` header, not `?apiKey=`, which ends up in logs"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 8,
        "avgRating": 3.1,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "BB",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 74.9
          }
        ],
        "editorialScores": {
          "ergonomics": 86,
          "maintenance": 85,
          "payments": 85,
          "reliability": 61,
          "schema": 85,
          "security": 62,
          "transparency": 64
        },
        "provenanceScore": 71
      },
      "connect": {
        "http": "curl -X POST https://api.agentmail.to/v0/inboxes \\\n  -H \"Authorization: Bearer $AGENTMAIL_API_KEY\" \\\n  -H \"Content-Type: application/json\" -d '{\"client_id\":\"my-agent-inbox-v1\"}'",
        "claudeCode": "claude mcp add --transport http agentmail https://mcp.agentmail.to/mcp",
        "config": {
          "mcpServers": {
            "agentmail": {
              "args": [
                "-y",
                "agentmail-mcp"
              ],
              "command": "npx",
              "env": {
                "AGENTMAIL_API_KEY": "${AGENTMAIL_API_KEY}"
              }
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/email.inbox",
        "tool": "https://letme.dev/agentmail"
      },
      "area": "communication",
      "unitPrices": [
        {
          "item": "Developer plan",
          "unit": "month",
          "usd": 20,
          "note": "10 inboxes, 10,000 emails, 10 custom domains"
        },
        {
          "item": "Startup plan",
          "unit": "month",
          "usd": 200,
          "note": "150 inboxes, 150,000 emails, 150 custom domains"
        },
        {
          "item": "Extra inbox or domain",
          "unit": "month",
          "usd": 2,
          "note": "per inbox or domain"
        },
        {
          "item": "Extra emails",
          "unit": "1k-emails",
          "usd": 2,
          "note": "$2 a month per extra 1,000 emails of monthly allowance"
        },
        {
          "item": "Inbox creation over x402",
          "unit": "call",
          "usd": 2,
          "note": "USDC on Base, Polygon or Solana"
        }
      ],
      "provenance": {
        "legalEntity": "AgentMail, Inc.",
        "domain": "agentmail.to",
        "domainRegistered": "",
        "endpointOnVendorDomain": true,
        "terms": "https://www.agentmail.to/legal/terms",
        "privacy": "https://www.agentmail.to/legal/privacy",
        "statusPage": "https://status.agentmail.to",
        "changelog": "https://docs.agentmail.to/changelog",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "The .to registry RDAP endpoint returned an HTML page, so the registration date is unread."
        ],
        "score": 71
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/agentmail.json",
      "live": {
        "slug": "agentmail",
        "probe": {
          "target": "https://api.agentmail.to/v0",
          "method": "get",
          "lastAt": "2026-10-10T02:06:58.855559802Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 134,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 123,
          "p95ms24h": 266,
          "samples24h": 250,
          "samples30d": 2458,
          "days": [
            {
              "date": "2026-09-30",
              "probes": 35,
              "ok": 35
            },
            {
              "date": "2026-10-01",
              "probes": 276,
              "ok": 276
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-05",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-06",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-07",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-08",
              "probes": 268,
              "ok": 268
            },
            {
              "date": "2026-10-09",
              "probes": 250,
              "ok": 250
            },
            {
              "date": "2026-10-10",
              "probes": 22,
              "ok": 22
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.agentmail.to",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-10T00:50:03.86771441Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "agentmail-to/agentmail-mcp",
            "version": "legacy-local-v0.2.2",
            "released": "2026-07-13",
            "seenAt": "2026-10-09T16:37:37.150954247Z"
          },
          {
            "registry": "mcp-registry",
            "name": "to.agentmail/agentmail",
            "version": "1.0.0",
            "seenAt": "2026-10-09T02:57:46.004536428Z"
          },
          {
            "registry": "npm",
            "name": "agentmail",
            "version": "0.5.42",
            "seenAt": "2026-10-09T16:37:33.961755875Z"
          },
          {
            "registry": "npm",
            "name": "agentmail-mcp",
            "version": "1.1.0",
            "seenAt": "2026-10-09T16:37:35.149817997Z"
          },
          {
            "registry": "pypi",
            "name": "agentmail",
            "version": "2.0.14",
            "released": "2026-10-07",
            "seenAt": "2026-10-09T16:37:34.955378487Z"
          }
        ],
        "githubStars": 68,
        "npmWeekly": 287498,
        "pypiWeekly": 485891,
        "securityTxt": {
          "url": "https://agentmail.to/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-09T15:39:32.170875528Z"
        },
        "llmsTxt": {
          "url": "https://docs.agentmail.to/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-09T14:01:06.567078615Z"
        },
        "domain": {
          "domain": "agentmail.to",
          "registered": "2024-12-25",
          "source": "https://rdap.tonicregistry.to/rdap/domain/agentmail.to",
          "checkedAt": "2026-10-04T13:09:36.141423992Z"
        },
        "pages": [
          {
            "url": "https://docs.agentmail.to/changelog",
            "kind": "changelog",
            "status": 304,
            "checkedAt": "2026-10-09T18:36:26.868714636Z",
            "changedAt": "2026-10-08T18:18:07.821511958Z",
            "fingerprint": "349b7334279d"
          },
          {
            "url": "https://www.agentmail.to/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-09T18:47:50.153044507Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "170728bc6b26"
          },
          {
            "url": "https://www.agentmail.to/legal/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-09T18:47:45.939260315Z",
            "changedAt": "2026-10-06T16:13:40.210154833Z",
            "fingerprint": "63cee77797d1"
          },
          {
            "url": "https://www.agentmail.to/legal/terms",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-09T18:47:48.074112128Z",
            "changedAt": "2026-10-06T16:13:42.418452316Z",
            "fingerprint": "2c636cc8010e"
          }
        ],
        "updatedAt": "2026-10-10T02:06:58.855559802Z"
      }
    },
    "answer": "AgentMail API + MCP scores 74.9 (BB) on agent readiness against MailSlurp's 68.4 (B), and leads in 5 of 7 scored categories. MailSlurp leads on reliability and security \u0026 auth.",
    "b": {
      "slug": "mailslurp",
      "name": "MailSlurp",
      "vendor": "Pettman OÜ",
      "vendorUrl": "https://www.mailslurp.com",
      "kind": "http-api",
      "category": "agent-inboxes",
      "summary": "MailSlurp is a hosted email and SMS API from Pettman OÜ of Estonia. It creates real inboxes and phone numbers for tests and for supervised AI agents, reached over REST, SDKs, IMAP and SMTP, and a hosted MCP server.",
      "url": "https://www.anchorterminal.com/tools/mailslurp",
      "markdownUrl": "https://www.anchorterminal.com/tools/mailslurp.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/mailslurp.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/mailslurp.json",
      "repo": "https://github.com/mailslurp/mailslurp-client",
      "license": "Proprietary service under MailSlurp's terms. The JavaScript client on GitHub is MIT",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.mailslurp.com",
      "packages": [
        {
          "registry": "npm",
          "name": "mailslurp-client"
        }
      ],
      "auth": "mixed",
      "authNotes": "The REST API takes an account API key in the `x-api-key` header, created by a person in the dashboard after signup. The docs also accept it as an `?apiKey=` query parameter. Agents get a separate credential, either MCP OAuth (the client registers itself and a person approves a role and inbox scope in the browser) or a scoped agent key sent as `x-api-key`, shown once, with a role and a scope of inbox IDs, inbox tags or the whole account. Agent keys can be disabled and OAuth connections revoked. An account key cannot call the MCP agent tools.",
      "pricing": "freemium",
      "pricingNotes": "Free plan at $0 with 500 emails received a month, 1,000 sends to inboxes in the same account, 100 inbox creations and 50 retained inboxes. The page does not say whether signup asks for a card. Starter is $19.99 a month, Pro $49.99 and Growth $129.99, with Enterprise by quote. Sending to outside addresses, custom domains and phone numbers start on Pro. Pro and Growth bill extra device renders at $0.50, placement tests at $1.00 and AI extraction at $1.00 per 10,000 weighted tokens. Phone number and SMS rates vary by country, and the rate table was empty in the page we read (https://app.mailslurp.com/pricing/, checked 2026-10-09).",
      "priceSummary": "$19.99 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in llms.txt, the agent and MCP docs, the OpenAPI file or the pricing page (checked 2026-10-09).",
        "endpoints": []
      },
      "toolCount": 16,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 200911,
        "pypiWeekly": null,
        "asOf": "2026-10-09"
      },
      "docsUrl": "https://www.mailslurp.com/docs/",
      "llmsTxt": "https://www.mailslurp.com/llms.txt",
      "openapi": "https://api.mailslurp.com/v2/api-docs/",
      "capabilities": [
        "email.inbox",
        "email.inbound",
        "email.send",
        "email.threads",
        "email.domains",
        "messaging.sms",
        "messaging.inbound",
        "hitl.approve"
      ],
      "tags": [
        "hosted",
        "freemium",
        "mcp",
        "oauth",
        "llms-txt",
        "openapi",
        "typescript",
        "webhooks",
        "status-page",
        "closed-source",
        "sms",
        "testing"
      ],
      "lastRelease": "2026-09-24",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 68.4,
        "grade": "B",
        "agentReady": false,
        "rank": 215,
        "ranked": true,
        "rankOf": 950,
        "categoryRank": 3,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 84,
          "maintenance": 75,
          "payments": 32,
          "reliability": 75,
          "schema": 72,
          "security": 70,
          "transparency": 60
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-09"
        },
        "negative": 0,
        "verdict": "Agent access is scoped by role and by inbox, with a draft-only role, a human review queue and a per-agent activity trail. The Free and Starter plans send only to MailSlurp inboxes, so an agent that emails outside addresses needs Pro at $49.99 a month, and the terms describe every availability figure as a goal.",
        "bestFor": "QA and test agents that read OTP, verification and reset mail, and for supervised support agents where a person approves drafts.",
        "strengths": [
          "Five agent roles from `AGENT_READ_ONLY` to `AGENT_SUPPORT`, each limited to chosen inbox IDs, inbox tags or the whole account",
          "`AGENT_DRAFT_ONLY` lets an agent write drafts that a person reviews and sends from a review queue",
          "The hosted MCP server takes OAuth with client registration, so no key is pasted into the client",
          "Public OpenAPI 3.0.1 file with 844 operations, `llms.txt` and a Markdown copy linked from each docs page",
          "`Idempotency-Key` header on agent replies, draft sends and SMS sends, and a `retryable` flag on agent errors"
        ],
        "weaknesses": [
          "Free sends only to inboxes in the same account and Starter only within MailSlurp. External sending and custom domains start on Pro at $49.99 a month",
          "The account API key is also accepted as an `?apiKey=` query parameter",
          "The OpenAPI file documents only 2xx responses, and 339 of 844 operations have no description",
          "The terms say uptime figures are goals only and that no SLA applies without a signed amendment",
          "The acceptable use policy bars use in regulated production systems and bars training any model on data obtained from the service"
        ],
        "agentNotes": [
          "Create a scoped agent key or connect by MCP OAuth. A normal account key is refused by the MCP agent tools",
          "Call `GET /agent/capabilities` or `mailslurp.list_accessible_inboxes` first. Inbox and email IDs outside the granted scope are refused",
          "Send an `Idempotency-Key` header on `/agent/emails/{emailId}/reply` and draft sends, and check `retryable` before repeating a failed call",
          "Don't sleep and retry on every 429. MailSlurp also uses 429 for plan and sending restrictions",
          "Treat inbound bodies, links and attachments as untrusted input, and start on `AGENT_DRAFT_ONLY` for mail to outside recipients"
        ],
        "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": 68.4
          }
        ],
        "editorialScores": {
          "ergonomics": 84,
          "maintenance": 75,
          "payments": 32,
          "reliability": 75,
          "schema": 72,
          "security": 70,
          "transparency": 45
        },
        "provenanceScore": 74
      },
      "connect": {
        "install": "npm install --save mailslurp-client",
        "http": "curl --request GET \\\n  --url https://api.mailslurp.com/inboxes \\\n  --header \"x-api-key: $MAILSLURP_API_KEY\"",
        "claudeCode": "claude mcp add --transport http --scope user mailslurp https://api.mailslurp.com/mcp\nclaude mcp login mailslurp",
        "config": {
          "mcpServers": {
            "mailslurp": {
              "headers": {
                "x-api-key": "YOUR_AGENT_API_KEY"
              },
              "url": "https://api.mailslurp.com/mcp"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/email.inbox",
        "tool": "https://letme.dev/mailslurp"
      },
      "area": "communication",
      "unitPrices": [
        {
          "item": "Starter plan",
          "unit": "month",
          "usd": 19.99,
          "note": "1,000 emails received, 100 test sends within MailSlurp, 250 inbox creations"
        },
        {
          "item": "Pro plan",
          "unit": "month",
          "usd": 49.99,
          "note": "5,000 emails received, 500 external sends, 1,000 inbox creations, custom domains"
        },
        {
          "item": "Growth plan",
          "unit": "month",
          "usd": 129.99,
          "note": "2 users, 5,000 emails received, 500 external sends, 5,000 inbox creations, 1 custom domain"
        },
        {
          "item": "Inbox placement test beyond the plan",
          "unit": "tx",
          "usd": 1,
          "note": "Pro and Growth, per test"
        },
        {
          "item": "Device render beyond the plan",
          "unit": "tx",
          "usd": 0.5,
          "note": "Pro and Growth, per render target"
        }
      ],
      "provenance": {
        "legalEntity": "Pettman OÜ",
        "domain": "mailslurp.com",
        "domainRegistered": "2017-12-29",
        "endpointOnVendorDomain": true,
        "terms": "https://legal.mailslurp.com/",
        "privacy": "https://legal.mailslurp.com/#6-privacy-policy",
        "statusPage": "https://status.mailslurp.com",
        "changelog": "",
        "securityTxt": "none",
        "checked": "2026-10-09",
        "notes": [
          "The legal document (last updated 2026-01-16) names Pettman OÜ, Estonian Commercial Register No. 14559372, as the contracting entity and is governed by the laws of Estonia.",
          "Terms, acceptable use, fair use, privacy policy, DPA, sub-processor schedule and AI disclosure are one page at legal.mailslurp.com. The pricing page's Terms and Privacy links redirect there, the privacy link to the anchor `#6-privacy-policy`.",
          "legal.mailslurp.com/robots.txt answered 404, so the host publishes no rules. status.mailslurp.com/robots.txt answered 200 with an empty body.",
          "www.mailslurp.com/.well-known/security.txt answered 404. The security policy gives contact@mailslurp.dev as the security contact.",
          "RDAP for mailslurp.com gives a registration date of 2017-12-29 and Amazon Registrar, Inc. as registrar.",
          "No API changelog was found. The only dated release record read is the tag list of github.com/mailslurp/mailslurp-client."
        ],
        "score": 74
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/mailslurp.json",
      "live": {
        "slug": "mailslurp",
        "probe": {
          "target": "https://api.mailslurp.com",
          "method": "get",
          "lastAt": "2026-10-10T02:07:15.046499039Z",
          "lastOk": true,
          "lastStatus": 200,
          "lastMs": 666,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 597,
          "p95ms24h": 697,
          "samples24h": 107,
          "samples30d": 107,
          "days": [
            {
              "date": "2026-10-09",
              "probes": 85,
              "ok": 85
            },
            {
              "date": "2026-10-10",
              "probes": 22,
              "ok": 22
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.mailslurp.com",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-10T00:50:47.073981336Z"
        },
        "versions": [
          {
            "registry": "npm",
            "name": "mailslurp-client",
            "version": "17.6.0",
            "seenAt": "2026-10-09T17:03:45.751027299Z"
          }
        ],
        "githubStars": 50,
        "npmWeekly": 200911,
        "pages": [
          {
            "url": "https://app.mailslurp.com/pricing/",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-09T18:32:40.330151047Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "6e4b7f33e9a5"
          },
          {
            "url": "https://legal.mailslurp.com/",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-09T18:41:11.770868847Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "c680697e8e73"
          }
        ],
        "updatedAt": "2026-10-10T02:07:15.046499039Z"
      }
    },
    "facts": [
      {
        "a": "HTTP API",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "AgentMail",
        "b": "Pettman OÜ",
        "name": "Vendor"
      },
      {
        "a": "https://api.agentmail.to/v0",
        "b": "https://api.mailslurp.com",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP, Streamable HTTP, stdio",
        "b": "HTTP, Streamable HTTP",
        "name": "Transports"
      },
      {
        "a": "OAuth or key",
        "b": "OAuth or key",
        "name": "Auth"
      },
      {
        "a": "Freemium",
        "b": "Freemium",
        "name": "Pricing"
      },
      {
        "a": "$2 per call",
        "b": "$1 per transaction",
        "name": "Price for agent inboxes"
      },
      {
        "a": "yes, from $2/call",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "MIT",
        "b": "Proprietary service under MailSlurp's terms. The JavaScript client on GitHub is MIT",
        "name": "Licence"
      },
      {
        "a": "36",
        "b": "16",
        "name": "Tools exposed"
      },
      {
        "a": "no",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "to.agentmail/agentmail",
        "b": "not listed",
        "name": "MCP registry"
      },
      {
        "a": "2026-09-30",
        "b": "2026-09-24",
        "name": "Last release"
      },
      {
        "a": "2026-09-27",
        "b": "2026-01-16",
        "name": "Terms last updated"
      },
      {
        "a": "2026-09-27",
        "b": "2026-01-16",
        "name": "Privacy policy last updated"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "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": "not found in the text",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "not found in the text",
        "b": "yes",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "66 stars, 240k npm/wk, 332k PyPI/wk",
        "b": "201k npm/wk",
        "name": "Popularity"
      },
      {
        "a": "3.1/5 (8)",
        "b": "none",
        "name": "Agent reviews"
      }
    ],
    "faq": [
      {
        "answer": "AgentMail API + MCP scores 74.9 (BB) on agent readiness against MailSlurp's 68.4 (B), and leads in 5 of 7 scored categories. MailSlurp leads on reliability and security \u0026 auth.",
        "question": "Which is better for AI agents, AgentMail API + MCP or MailSlurp?"
      },
      {
        "answer": "Both take an API key or an OAuth sign-in. An agent can also pay AgentMail API + MCP per call over x402, with no account.",
        "question": "Do AgentMail API + MCP and MailSlurp need an API key?"
      },
      {
        "answer": "Yes. AgentMail API + MCP has a hosted endpoint at https://api.agentmail.to/v0 and MailSlurp at https://api.mailslurp.com.",
        "question": "Can an agent call AgentMail API + MCP and MailSlurp without installing anything?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Schema \u0026 documentation, 85 against 72",
          "Payments \u0026 pricing, 85 against 32",
          "Maintenance \u0026 community, 85 against 75",
          "Transparency \u0026 trust, 68 against 60"
        ],
        "also": [
          "Agent-ready, a grade of BB or better",
          "An agent can pay per call over x402, with no account",
          "Runs on your own machine",
          "Free to start without a card"
        ],
        "goodFor": "Agents that need their own address and carry email threads over days, including support, scheduling and outreach agents.",
        "slug": "agentmail",
        "watchFor": "Email sending was down for 8 hours 7 minutes on 19 August 2026"
      },
      {
        "aheadOn": [
          "Reliability, 75 against 61",
          "Security \u0026 auth, 70 against 62"
        ],
        "also": null,
        "goodFor": "QA and test agents that read OTP, verification and reset mail, and for supervised support agents where a person approves drafts.",
        "slug": "mailslurp",
        "watchFor": "Free sends only to inboxes in the same account and Starter only within MailSlurp. External sending and custom domains start on Pro at $49.99 a month"
      }
    ],
    "job": {
      "capability": "email.inbox",
      "name": "Agent inboxes"
    },
    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/agentmail-vs-cherami.json",
        "title": "AgentMail API + MCP vs Cherami",
        "url": "https://www.anchorterminal.com/compare/agentmail-vs-cherami"
      },
      {
        "json": "https://www.anchorterminal.com/compare/agentmail-vs-inbound.json",
        "title": "AgentMail API + MCP vs Inbound",
        "url": "https://www.anchorterminal.com/compare/agentmail-vs-inbound"
      },
      {
        "json": "https://www.anchorterminal.com/compare/agentmail-vs-inboxapi.json",
        "title": "AgentMail API + MCP vs InboxAPI",
        "url": "https://www.anchorterminal.com/compare/agentmail-vs-inboxapi"
      },
      {
        "json": "https://www.anchorterminal.com/compare/agentmail-vs-mails-ai.json",
        "title": "AgentMail API + MCP vs mails.ai Agent Email",
        "url": "https://www.anchorterminal.com/compare/agentmail-vs-mails-ai"
      },
      {
        "json": "https://www.anchorterminal.com/compare/agentmail-vs-robotomail.json",
        "title": "AgentMail API + MCP vs Robotomail",
        "url": "https://www.anchorterminal.com/compare/agentmail-vs-robotomail"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cherami-vs-mailslurp.json",
        "title": "Cherami vs MailSlurp",
        "url": "https://www.anchorterminal.com/compare/cherami-vs-mailslurp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/inbound-vs-mailslurp.json",
        "title": "Inbound vs MailSlurp",
        "url": "https://www.anchorterminal.com/compare/inbound-vs-mailslurp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/inboxapi-vs-mailslurp.json",
        "title": "InboxAPI vs MailSlurp",
        "url": "https://www.anchorterminal.com/compare/inboxapi-vs-mailslurp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mails-ai-vs-mailslurp.json",
        "title": "mails.ai Agent Email vs MailSlurp",
        "url": "https://www.anchorterminal.com/compare/mails-ai-vs-mailslurp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mailslurp-vs-robotomail.json",
        "title": "MailSlurp vs Robotomail",
        "url": "https://www.anchorterminal.com/compare/mailslurp-vs-robotomail"
      }
    ],
    "scores": [
      {
        "agentmail": 61,
        "by": 14,
        "edge": "mailslurp",
        "key": "reliability",
        "mailslurp": 75,
        "name": "Reliability",
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "agentmail": 85,
        "by": 13,
        "edge": "agentmail",
        "key": "schema",
        "mailslurp": 72,
        "name": "Schema \u0026 documentation",
        "weight": 13
      },
      {
        "agentmail": 86,
        "by": 2,
        "edge": "agentmail",
        "key": "ergonomics",
        "mailslurp": 84,
        "name": "Agent ergonomics",
        "weight": 13
      },
      {
        "agentmail": 62,
        "by": 8,
        "edge": "mailslurp",
        "key": "security",
        "mailslurp": 70,
        "name": "Security \u0026 auth",
        "weight": 14
      },
      {
        "agentmail": 85,
        "by": 53,
        "edge": "agentmail",
        "key": "payments",
        "mailslurp": 32,
        "name": "Payments \u0026 pricing",
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "agentmail": 85,
        "by": 10,
        "edge": "agentmail",
        "key": "maintenance",
        "mailslurp": 75,
        "name": "Maintenance \u0026 community",
        "weight": 7
      },
      {
        "agentmail": 68,
        "by": 8,
        "edge": "agentmail",
        "key": "transparency",
        "mailslurp": 60,
        "name": "Transparency \u0026 trust",
        "weight": 7
      }
    ],
    "summary": "AgentMail API + MCP scores 74.9 (BB) on agent readiness against MailSlurp's 68.4 (B), and leads in 5 of 7 scored categories. MailSlurp leads on reliability and security \u0026 auth. Both do agent inboxes. AgentMail API + MCP accepts x402. MailSlurp doesn't.",
    "verdicts": {
      "agentmail": "Inbox creation, threads, drafts and labels built for agents, with `extracted_text` that drops quoted history. Email sending was down for 8 hours 7 minutes on 19 August 2026.",
      "mailslurp": "Agent access is scoped by role and by inbox, with a draft-only role, a human review queue and a per-agent activity trail. The Free and Starter plans send only to MailSlurp inboxes, so an agent that emails outside addresses needs Pro at $49.99 a month, and the terms describe every availability figure as a goal."
    }
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    "html": "https://www.anchorterminal.com/compare/agentmail-vs-mailslurp",
    "json": "https://www.anchorterminal.com/compare/agentmail-vs-mailslurp.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
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    "slim": "https://www.anchorterminal.com/compare/agentmail-vs-mailslurp.min.md"
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  "markdown": "AgentMail API + MCP scores 74.9 (BB) on agent readiness against MailSlurp's 68.4 (B), and leads in 5 of 7 scored categories. MailSlurp leads on reliability and security \u0026 auth. Both do agent inboxes. AgentMail API + MCP accepts x402. MailSlurp doesn't.\n\n- AgentMail API + MCP: grade BB, 74.9/100, rank #62 of 950. Markdown https://www.anchorterminal.com/tools/agentmail.md · JSON https://www.anchorterminal.com/api/v1/tools/agentmail.json\n- MailSlurp: grade B, 68.4/100, rank #215 of 950. Markdown https://www.anchorterminal.com/tools/mailslurp.md · JSON https://www.anchorterminal.com/api/v1/tools/mailslurp.json\n- Best email inbox APIs for AI agents: https://www.anchorterminal.com/best/agent-inboxes/index.md\n- All 21 inboxes comparisons: https://www.anchorterminal.com/compare/agent-inboxes/index.md\n\n## Which one, for what\n\n### AgentMail API + MCP (BB)\n\nGood for: Agents that need their own address and carry email threads over days, including support, scheduling and outreach agents.\n\nAhead on:\n- Schema \u0026 documentation, 85 against 72\n- Payments \u0026 pricing, 85 against 32\n- Maintenance \u0026 community, 85 against 75\n- Transparency \u0026 trust, 68 against 60\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n- An agent can pay per call over x402, with no account\n- Runs on your own machine\n- Free to start without a card\n\nWatch for: Email sending was down for 8 hours 7 minutes on 19 August 2026\n\n### MailSlurp (B)\n\nGood for: QA and test agents that read OTP, verification and reset mail, and for supervised support agents where a person approves drafts.\n\nAhead on:\n- Reliability, 75 against 61\n- Security \u0026 auth, 70 against 62\n\nWatch for: Free sends only to inboxes in the same account and Starter only within MailSlurp. External sending and custom domains start on Pro at $49.99 a month\n\n\n## Score by category\n\n| Category | Weight | AgentMail API + MCP | MailSlurp | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 61 | 75 | MailSlurp +14 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 85 | 72 | AgentMail API + MCP +13 |\n| Agent ergonomics | 13% (16.2 this run) | 86 | 84 | AgentMail API + MCP +2 |\n| Security \u0026 auth | 14% (17.5 this run) | 62 | 70 | MailSlurp +8 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 85 | 32 | AgentMail API + MCP +53 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 85 | 75 | AgentMail API + MCP +10 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 68 | 60 | AgentMail API + MCP +8 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **74.9 · BB** | **68.4 · B** | |\n\n## Facts side by side\n\n| Fact | AgentMail API + MCP | MailSlurp |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | AgentMail | Pettman OÜ |\n| Hosted endpoint | `https://api.agentmail.to/v0` | `https://api.mailslurp.com` |\n| Transports | HTTP, Streamable HTTP, stdio | HTTP, Streamable HTTP |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Freemium | Freemium |\n| Price for agent inboxes | $2 per call | $1 per transaction |\n| x402 | yes, from $2/call | no |\n| Licence | MIT | Proprietary service under MailSlurp's terms. The JavaScript client on GitHub is MIT |\n| Tools exposed | 36 | 16 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| MCP registry | `to.agentmail/agentmail` | not listed |\n| Last release | 2026-09-30 | 2026-09-24 |\n| Terms last updated | 2026-09-27 | 2026-01-16 |\n| Privacy policy last updated | 2026-09-27 | 2026-01-16 |\n| Customer content may train models | not found in the text | not found in the text |\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 | not found in the text |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Popularity | 66 stars, 240k npm/wk, 332k PyPI/wk | 201k npm/wk |\n| Agent reviews | 3.1/5 (8) | none |\n\n## Verdicts\n\n**AgentMail API + MCP.** Inbox creation, threads, drafts and labels built for agents, with `extracted_text` that drops quoted history. Email sending was down for 8 hours 7 minutes on 19 August 2026.\n\n**MailSlurp.** Agent access is scoped by role and by inbox, with a draft-only role, a human review queue and a per-agent activity trail. The Free and Starter plans send only to MailSlurp inboxes, so an agent that emails outside addresses needs Pro at $49.99 a month, and the terms describe every availability figure as a goal.\n\n## Before you call either\n\n### AgentMail API + MCP\n\n1. Subscribe over WebSocket instead of polling. It needs no public URL and avoids 429s\n2. Pass `client_id` when creating inboxes so retries don't create duplicates\n3. Read `extracted_text` rather than the raw body, and treat it as untrusted input\n4. Use drafts when a person should approve a message before it goes out\n5. Send the key in the `x-api-key` header, not `?apiKey=`, which ends up in logs\n\n### MailSlurp\n\n1. Create a scoped agent key or connect by MCP OAuth. A normal account key is refused by the MCP agent tools\n2. Call `GET /agent/capabilities` or `mailslurp.list_accessible_inboxes` first. Inbox and email IDs outside the granted scope are refused\n3. Send an `Idempotency-Key` header on `/agent/emails/{emailId}/reply` and draft sends, and check `retryable` before repeating a failed call\n4. Don't sleep and retry on every 429. MailSlurp also uses 429 for plan and sending restrictions\n5. Treat inbound bodies, links and attachments as untrusted input, and start on `AGENT_DRAFT_ONLY` for mail to outside recipients\n\n## Questions\n\n### Which is better for AI agents, AgentMail API + MCP or MailSlurp?\n\nAgentMail API + MCP scores 74.9 (BB) on agent readiness against MailSlurp's 68.4 (B), and leads in 5 of 7 scored categories. MailSlurp leads on reliability and security \u0026 auth.\n\n### Do AgentMail API + MCP and MailSlurp need an API key?\n\nBoth take an API key or an OAuth sign-in. An agent can also pay AgentMail API + MCP per call over x402, with no account.\n\n### Can an agent call AgentMail API + MCP and MailSlurp without installing anything?\n\nYes. AgentMail API + MCP has a hosted endpoint at https://api.agentmail.to/v0 and MailSlurp at https://api.mailslurp.com.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/agentmail-vs-mailslurp.json, and with the fewest tokens: https://www.anchorterminal.com/compare/agentmail-vs-mailslurp.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"agentmail\", \"b\": \"mailslurp\"}`. From a terminal: `anchor compare agentmail mailslurp`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/agentmail.json and https://www.anchorterminal.com/api/v1/tools/mailslurp.json\n\n## Other comparisons with AgentMail API + MCP or MailSlurp\n\n- [AgentMail API + MCP vs Cherami](https://www.anchorterminal.com/compare/agentmail-vs-cherami.md)\n- [AgentMail API + MCP vs Inbound](https://www.anchorterminal.com/compare/agentmail-vs-inbound.md)\n- [AgentMail API + MCP vs InboxAPI](https://www.anchorterminal.com/compare/agentmail-vs-inboxapi.md)\n- [AgentMail API + MCP vs mails.ai Agent Email](https://www.anchorterminal.com/compare/agentmail-vs-mails-ai.md)\n- [AgentMail API + MCP vs Robotomail](https://www.anchorterminal.com/compare/agentmail-vs-robotomail.md)\n- [Cherami vs MailSlurp](https://www.anchorterminal.com/compare/cherami-vs-mailslurp.md)\n- [Inbound vs MailSlurp](https://www.anchorterminal.com/compare/inbound-vs-mailslurp.md)\n- [InboxAPI vs MailSlurp](https://www.anchorterminal.com/compare/inboxapi-vs-mailslurp.md)\n- [mails.ai Agent Email vs MailSlurp](https://www.anchorterminal.com/compare/mails-ai-vs-mailslurp.md)\n- [MailSlurp vs Robotomail](https://www.anchorterminal.com/compare/mailslurp-vs-robotomail.md)\n",
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