{ "data": { "a": { "slug": "mailgun", "name": "Mailgun API + MCP", "vendor": "Mailgun (Sinch)", "vendorUrl": "https://www.mailgun.com", "kind": "http-api", "category": "email", "summary": "Email sending API with inbound routes, a Forwards API, templates, mailing lists, suppressions and address validation, in US and EU regions.", "url": "https://www.anchorterminal.com/tools/mailgun", "markdownUrl": "https://www.anchorterminal.com/tools/mailgun.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/mailgun.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/mailgun.json", "repo": "https://github.com/mailgun/mailgun-mcp-server", "license": "Apache-2.0", "transports": [ "http", "stdio" ], "remoteUrl": "https://api.mailgun.net/v3", "packages": [ { "registry": "npm", "name": "mailgun.js" }, { "registry": "pypi", "name": "mailgun" }, { "registry": "npm", "name": "@mailgun/mcp-server" } ], "auth": "api-key", "authNotes": "HTTP Basic auth with the username `api` and the API key as password. Role-based keys limit what each key can do. EU accounts use api.eu.mailgun.net. The MCP server reads `MAILGUN_API_KEY` and `MAILGUN_API_REGION` from its environment.", "pricing": "freemium", "pricingNotes": "Free plan with 100 emails a day, 1 custom domain, 1 inbound route and 1 day of logs. Basic $15 a month for 10,000 emails, overage $1.80 per 1,000. Foundation $35 for 50,000 (overage $1.30, first month free). Scale $90 for 100,000 (overage $1.10 falling to $0.40 at 2.5 million), with a dedicated IP and 5,000 validations. Validations from $1.20 per 100 (https://www.mailgun.com/pricing/).", "priceSummary": "$15 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402 support in docs, pricing or MCP README (checked 2026-09-30).", "endpoints": [] }, "toolCount": 74, "popularity": { "githubStars": 62, "npmWeekly": 1321769, "pypiWeekly": 61238, "asOf": "2026-09-30" }, "docsUrl": "https://documentation.mailgun.com", "llmsTxt": "https://documentation.mailgun.com/llms.txt", "openapi": "https://documentation.mailgun.com/_bundle/docs/mailgun/api-reference/send/mailgun.yaml", "capabilities": [ "email.send", "email.inbound", "email.templates", "email.domains", "email.analytics" ], "tags": [ "hosted", "freemium", "mcp", "llms-txt", "openapi", "typescript", "python", "webhooks" ], "lastRelease": "2026-09-21", "graded": true, "anchor": { "graded": true, "score": 66.2, "grade": "B", "agentReady": false, "rank": 242, "ranked": true, "rankOf": 722, "categoryRank": 7, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 60, "maintenance": 87, "payments": 40, "reliability": 57, "schema": 83, "security": 74, "transparency": 69 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Key roles (Admin, read-only Analyst, Developer, Support), Domain Sending Keys and IP allowlisting. 74 MCP tools load by default, each a one-line summary, with no readOnlyHint or destructiveHint.", "bestFor": "Teams that want inbound routing, validation and per-key roles in one account, in US or EU regions.", "strengths": [ "Key roles (Admin, read-only Analyst, Developer, Support), Domain Sending Keys and IP allowlisting", "OpenAPI 3.1 specs for `send`, `validate`, `optimize` and `inspect`, plus llms.txt", "Inbound routes and a Forwards API (May 2026) for incoming mail", "SOC 2 Type II and ISO 27001, with a third-party bug bounty", "Weekly release notes through September 2026 and MCP CI on Node 20, 22 and 24" ], "weaknesses": [ "74 MCP tools load by default, each a one-line summary, with no readOnlyHint or destructiveHint", "12 status incidents since 10 July, including 93 minutes of US validation API errors", "No general API rate limit published and no idempotency key for sends", "Free plan keeps logs for 1 day and allows 1 inbound route", "No security.txt" ], "agentNotes": [ "Give an agent that only sends a Domain Sending Key, which can only POST /messages for one domain", "Start the MCP with `--tags validate,inspect` when you don't need the 70 send-tagged tools", "Set `MAILGUN_API_REGION=eu` for EU accounts, which live on api.eu.mailgun.net", "Add `o:testmode=yes` to check a send without delivering it", "Verify a custom domain first. The sandbox domain reaches only 5 authorised recipients" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 66.2 } ], "editorialScores": { "ergonomics": 60, "maintenance": 87, "payments": 40, "reliability": 57, "schema": 83, "security": 74, "transparency": 64 }, "provenanceScore": 73 }, "connect": { "http": "curl -s --user \"api:$MAILGUN_API_KEY\" \"https://api.mailgun.net/v3/$MAILGUN_DOMAIN/messages\" \\\n -F from=\"Test \u003cpostmaster@$MAILGUN_DOMAIN\u003e\" -F to=you@example.com \\\n -F subject=\"Hello\" -F text=\"Testing Mailgun\"", "claudeCode": "claude mcp add mailgun -e MAILGUN_API_KEY=$MAILGUN_API_KEY -- npx -y @mailgun/mcp-server", "config": { "mcpServers": { "mailgun": { "args": [ "-y", "@mailgun/mcp-server" ], "command": "npx", "env": { "MAILGUN_API_KEY": "${MAILGUN_API_KEY}", "MAILGUN_API_REGION": "us" } } } } }, "letme": { "capability": "https://letme.dev/email.send", "tool": "https://letme.dev/mailgun" }, "area": "communication", "unitPrices": [ { "item": "Basic", "unit": "month", "usd": 15, "note": "10,000 emails" }, { "item": "Foundation", "unit": "month", "usd": 35, "note": "50,000 emails" }, { "item": "Scale", "unit": "month", "usd": 90, "note": "100,000 emails, 1 dedicated IP" }, { "item": "Overage on Basic", "unit": "1k-emails", "usd": 1.8 }, { "item": "Overage on Foundation", "unit": "1k-emails", "usd": 1.3 }, { "item": "Overage on Scale", "unit": "1k-emails", "usd": 1.1, "note": "falls to $0.40 at 2.5 million" } ], "provenance": { "legalEntity": "Mailgun Technologies, Inc.", "domain": "mailgun.com", "domainRegistered": "2003-12-20", "domainNote": "mailgun.com was registered in 2003, years before Mailgun launched in 2010.", "endpointOnVendorDomain": false, "terms": "https://www.mailgun.com/legal/terms/", "privacy": "https://www.mailgun.com/legal/privacy-policy/", "statusPage": "https://status.mailgun.com", "changelog": "https://documentation.mailgun.com/docs/mailgun/release/release-notes", "securityTxt": "none", "checked": "2026-09-30", "notes": [ "The API is served from mailgun.net, not mailgun.com.", "The terms name Sinch Email and the entity on the service order rather than a single company." ], "score": 73 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/mailgun.json", "live": { "slug": "mailgun", "probe": { "target": "https://api.mailgun.net/v3", "method": "get", "lastAt": "2026-10-08T19:52:55.039495939Z", "lastOk": true, "lastStatus": 404, "lastMs": 260, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 437, "p95ms24h": 529, "samples24h": 272, "samples30d": 2143, "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": 225, "ok": 225 } ] }, "vendorStatus": { "page": "https://status.mailgun.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-08T19:50:48.490052251Z" }, "versions": [ { "registry": "github", "name": "mailgun/mailgun-mcp-server", "version": "v2.1.3", "released": "2026-09-16", "seenAt": "2026-10-08T16:19:36.449835181Z" }, { "registry": "npm", "name": "@mailgun/mcp-server", "version": "2.1.3", "seenAt": "2026-10-08T16:19:34.851701385Z" }, { "registry": "npm", "name": "mailgun.js", "version": "14.1.0", "seenAt": "2026-10-08T16:19:34.21932814Z" }, { "registry": "pypi", "name": "mailgun", "version": "1.9.1", "released": "2026-09-21", "seenAt": "2026-10-08T16:19:34.575243526Z" } ], "githubStars": 62, "npmWeekly": 1325863, "pypiWeekly": 54909, "securityTxt": { "url": "https://mailgun.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-08T15:38:46.117930308Z" }, "llmsTxt": { "url": "https://documentation.mailgun.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-08T14:00:35.451274216Z" }, "domain": { "domain": "mailgun.com", "registered": "2003-12-20", "source": "https://rdap.verisign.com/com/v1/domain/mailgun.com", "checkedAt": "2026-10-04T13:05:38.739240418Z" }, "pages": [ { "url": "https://documentation.mailgun.com/docs/mailgun/release/release-notes", "kind": "changelog", "status": 200, "checkedAt": "2026-10-08T18:19:58.332283375Z", "changedAt": "2026-10-08T18:19:58.332283375Z", "fingerprint": "02e322cd420f" }, { "url": "https://www.mailgun.com/pricing/", "kind": "pricing", "status": 304, "checkedAt": "2026-10-08T18:28:59.565198483Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "dbcce09b527b" }, { "url": "https://www.mailgun.com/legal/privacy-policy/", "kind": "privacy", "status": 304, "checkedAt": "2026-10-08T18:28:55.525463475Z", "changedAt": "2026-10-02T15:27:12.688197359Z", "fingerprint": "213ddc77ab01" }, { "url": "https://www.mailgun.com/legal/terms/", "kind": "terms", "status": 304, "checkedAt": "2026-10-08T18:28:57.5620461Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "e68fb8d6980b" } ], "updatedAt": "2026-10-08T19:52:55.039495939Z" } }, "answer": "Mailtrap Email API + MCP and Mailgun API + MCP score within a point of each other on agent readiness, 66.8 (B) and 66.2 (B). Mailgun API + MCP leads on security \u0026 auth.", "b": { "slug": "mailtrap", "name": "Mailtrap Email API + MCP", "vendor": "Mailtrap (Railsware)", "vendorUrl": "https://mailtrap.io", "kind": "http-api", "category": "email", "summary": "Email platform from Railsware Products Studio LLC for transactional and bulk sending, inbound mail, templates, contacts and sandbox testing. Agents reach it through a REST API, SMTP, SDKs, a CLI and a local MCP server.", "url": "https://www.anchorterminal.com/tools/mailtrap", "markdownUrl": "https://www.anchorterminal.com/tools/mailtrap.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/mailtrap.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/mailtrap.json", "repo": "https://github.com/mailtrap/mailtrap-mcp", "license": "Proprietary service under Mailtrap's terms of service. The MCP server, the Node.js SDK and the CLI are MIT", "transports": [ "http", "stdio" ], "remoteUrl": "https://send.api.mailtrap.io", "packages": [ { "registry": "npm", "name": "mailtrap" }, { "registry": "npm", "name": "mcp-mailtrap" }, { "registry": "pypi", "name": "mailtrap" } ], "auth": "api-key", "authNotes": "Self-serve API token, sent as `Authorization: Bearer` or in the `Api-Token` header. Tokens are created at mailtrap.io/settings/api-tokens with permissions per resource and an expiry of 1 to 365 days or a custom date (365 by default). A reset leaves the old token valid for 12 hours. The first token is made by hand in the UI, and later ones can be managed through the API. The MCP server reads `MAILTRAP_API_TOKEN`, and the sub-account tools need a separate organisation token.", "pricing": "freemium", "pricingNotes": "Free plan of 4,000 emails a month, capped at 150 a day, and the vendor says signup needs no credit card. Basic is $15 a month for 10,000 emails, Business starts at $85 for 100,000 and Enterprise at $750 for 1,500,000. Overage per 1,000 emails is $1.00, $0.88 and $0.55, and the free plan has none. Email Sandbox and Email Marketing are priced separately (https://mailtrap.io/pricing.md, checked 2026-10-08).", "priceSummary": "$15 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs index, the pricing reference, the OpenAPI specs or the MCP README (checked 2026-10-08).", "endpoints": [] }, "toolCount": 125, "popularity": { "githubStars": 65, "npmWeekly": 65939, "pypiWeekly": 21317, "asOf": "2026-10-08" }, "docsUrl": "https://docs.mailtrap.io/", "llmsTxt": "https://docs.mailtrap.io/llms.txt", "openapi": "https://github.com/mailtrap/mailtrap-openapi", "registryName": "io.mailtrap/mcp", "capabilities": [ "email.send", "email.inbound", "email.templates", "email.domains", "email.analytics", "email.marketing", "email.inbox", "email.threads" ], "tags": [ "hosted", "freemium", "no-card", "mcp", "openapi", "llms-txt", "cli", "smtp", "typescript", "python", "webhooks", "sandbox", "status-page", "soc2", "iso27001" ], "lastRelease": "2026-10-08", "graded": true, "anchor": { "graded": true, "score": 66.8, "grade": "B", "agentReady": false, "rank": 228, "ranked": true, "rankOf": 722, "categoryRank": 5, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 62, "maintenance": 93, "payments": 40, "reliability": 65, "schema": 82, "security": 60, "transparency": 77 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "Public OpenAPI 3.1 specs, API tokens with per-resource permissions and expiry dates, and a free plan of 4,000 emails a month without a card support agent use. The MCP server loads 125 tools with no toolsets, no idempotency key was found for sends, and the status page records a sending outage of 1 hour 32 minutes on 1 August 2026.", "bestFor": "Teams that want sending, a test sandbox and inbound mail under one token, with public OpenAPI specs and a free plan.", "strengths": [ "Ten public OpenAPI 3.1 specs in mailtrap/mailtrap-openapi, plus llms.txt, llms-full.txt and a Markdown copy of every docs page", "API tokens carry per-resource permissions and an expiry date (365 days by default), and a reset keeps the old token valid for 12 hours", "Free plan of 4,000 emails a month, with signup stated as needing no credit card, and overage rates published per 1,000 emails", "Every MCP tool is annotated, 53 with readOnlyHint and the other 72 with destructiveHint set true or false", "Email Sandbox captures test sends without delivering them, through the same API token and SDK switch" ], "weaknesses": [ "The MCP server registers 125 tools at once, with no toolsets, filtering or read-only mode", "No idempotency key for sends was found in the OpenAPI specs or the docs", "The status page records a sending outage of 1 hour 32 minutes on 1 August 2026 covering the Email Sending API, SMTP and Inbound Email", "Inbound and sandbox message bodies reach the model through the MCP server, and no prompt-injection guidance was found in its README or the docs", "User audit logs are limited to the Enterprise plan, and the free plan keeps email logs for 3 days" ], "agentNotes": [ "Ask the operator to create the first API token at mailtrap.io/settings/api-tokens. The first token can't be created through the API.", "Send transactional mail to send.api.mailtrap.io and bulk mail to bulk.api.mailtrap.io. Sandbox sending uses a different base URL and an inbox ID.", "Verify a sending domain before the first production send, and use Email Sandbox to test payloads without delivery.", "Stay under 150 requests per 10 seconds per token, and 10 per 60 seconds per account on the Stats and Suppressions APIs. On 429, back off until `x-ratelimit-reset`.", "Don't retry a timed-out send blindly, because no idempotency key was found. Check the email logs first." ], "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": 66.8 } ], "editorialScores": { "ergonomics": 62, "maintenance": 93, "payments": 40, "reliability": 65, "schema": 82, "security": 60, "transparency": 66 }, "provenanceScore": 87 }, "connect": { "install": "npm install mailtrap", "http": "curl -X POST https://send.api.mailtrap.io/api/send \\\n -H 'Authorization: Bearer YOUR_API_KEY' \\\n -H 'Content-Type: application/json' \\\n -d '{\n \"from\": {\"email\": \"sender@example.com\"},\n \"to\": [{\"email\": \"recipient@example.com\"}],\n \"subject\": \"Hello from Mailtrap\",\n \"text\": \"Welcome to Mailtrap!\"\n }'", "config": { "mcpServers": { "mailtrap": { "args": [ "-y", "mcp-mailtrap" ], "command": "npx", "env": { "DEFAULT_FROM_EMAIL": "your_sender@example.com", "MAILTRAP_ACCOUNT_ID": "your_account_id", "MAILTRAP_API_TOKEN": "your_mailtrap_api_token", "MAILTRAP_SANDBOX_ID": "your_sandbox_id" } } } } }, "letme": { "capability": "https://letme.dev/email.send", "tool": "https://letme.dev/mailtrap" }, "area": "communication", "unitPrices": [ { "item": "Basic 10k", "unit": "month", "usd": 15, "note": "10,000 emails" }, { "item": "Basic 100k", "unit": "month", "usd": 30, "note": "100,000 emails" }, { "item": "Business 100k", "unit": "month", "usd": 85, "note": "100,000 emails" }, { "item": "Enterprise 1.5M", "unit": "month", "usd": 750, "note": "1,500,000 emails" }, { "item": "Overage on Basic", "unit": "1k-emails", "usd": 1 }, { "item": "Overage on Business", "unit": "1k-emails", "usd": 0.88 }, { "item": "Overage on Enterprise", "unit": "1k-emails", "usd": 0.55 } ], "provenance": { "legalEntity": "Railsware Products Studio LLC", "domain": "mailtrap.io", "domainRegistered": "2011-10-06", "endpointOnVendorDomain": true, "terms": "https://mailtrap.io/terms/", "privacy": "https://mailtrap.io/privacy/", "statusPage": "https://status.mailtrap.info", "changelog": "https://feedback.mailtrap.io/changelog", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The terms of service (effective 24 September 2026) name Railsware Products Studio LLC, 117 E Colorado Blvd, Suite 600, Office 650, Pasadena, CA 91105, and are governed by Delaware law with AAA arbitration.", "The privacy policy and the data processing addendum at mailtrap.io/dpa are both dated 24 September 2026.", "The sending API answers at send.api.mailtrap.io and bulk.api.mailtrap.io. The status page is on a separate domain, status.mailtrap.info, hosted by Sorry.", "mailtrap.io/.well-known/security.txt returns 404.", "RDAP for mailtrap.io gives a registration date of 2011-10-06." ], "score": 87 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/mailtrap.json", "live": { "slug": "mailtrap", "probe": { "target": "https://send.api.mailtrap.io", "method": "get", "lastAt": "2026-10-08T19:52:55.182875963Z", "lastOk": true, "lastStatus": 404, "lastMs": 388, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 414, "p95ms24h": 468, "samples24h": 27, "samples30d": 27, "days": [ { "date": "2026-10-08", "probes": 27, "ok": 27 } ] }, "vendorStatus": { "page": "https://status.mailtrap.info", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-08T19:38:46.22405333Z" }, "pages": [ { "url": "https://feedback.mailtrap.io/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-10-08T18:20:18.491752089Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "e3acdfa7f8c4" }, { "url": "https://mailtrap.io/pricing.md", "kind": "pricing", "status": 200, "checkedAt": "2026-10-08T18:21:50.026823293Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "fb22f75ee67f" }, { "url": "https://mailtrap.io/privacy/", "kind": "privacy", "status": 200, "checkedAt": "2026-10-08T18:21:52.480729163Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "b8aafb804ef9" }, { "url": "https://mailtrap.io/terms/", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:21:54.495970731Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "1c4fcbf64dac" } ], "updatedAt": "2026-10-08T19:52:55.182875963Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Mailgun (Sinch)", "b": "Mailtrap (Railsware)", "name": "Vendor" }, { "a": "https://api.mailgun.net/v3", "b": "https://send.api.mailtrap.io", "name": "Hosted endpoint" }, { "a": "HTTP, stdio", "b": "HTTP, stdio", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Freemium", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Apache-2.0", "b": "Proprietary service under Mailtrap's terms of service. The MCP server, the Node.js SDK and the CLI are MIT", "name": "Licence" }, { "a": "74", "b": "125", "name": "Tools exposed" }, { "a": "yes", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "not listed", "b": "io.mailtrap/mcp", "name": "MCP registry" }, { "a": "2026-09-21", "b": "2026-10-08", "name": "Last release" }, { "a": "no date given", "b": "2026-09-24", "name": "Terms last updated" }, { "a": "no date given", "b": "2026-09-24", "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": "not found in the text", "b": "yes", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "62 stars, 1.3M npm/wk, 61k PyPI/wk", "b": "65 stars, 66k npm/wk, 21k PyPI/wk", "name": "Popularity" }, { "a": "3/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Mailtrap Email API + MCP and Mailgun API + MCP score within a point of each other on agent readiness, 66.8 (B) and 66.2 (B). Mailgun API + MCP leads on security \u0026 auth.", "question": "Which is better for AI agents, Mailgun API + MCP or Mailtrap Email API + MCP?" }, { "answer": "Both need an API key.", "question": "Do Mailgun API + MCP and Mailtrap Email API + MCP need an API key?" }, { "answer": "Yes. Mailgun API + MCP has a hosted endpoint at https://api.mailgun.net/v3 and Mailtrap Email API + MCP at https://send.api.mailtrap.io.", "question": "Can an agent call Mailgun API + MCP and Mailtrap Email API + MCP without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Security \u0026 auth, 74 against 60" ], "also": null, "goodFor": "Teams that want inbound routing, validation and per-key roles in one account, in US or EU regions.", "slug": "mailgun", "watchFor": "74 MCP tools load by default, each a one-line summary, with no readOnlyHint or destructiveHint" }, { "aheadOn": [ "Reliability, 65 against 57", "Maintenance \u0026 community, 93 against 87", "Transparency \u0026 trust, 77 against 69" ], "also": [ "Free to start without a card" ], "goodFor": "Teams that want sending, a test sandbox and inbound mail under one token, with public OpenAPI specs and a free plan.", "slug": "mailtrap", "watchFor": "The MCP server registers 125 tools at once, with no toolsets, filtering or read-only mode" } ], "job": { "capability": "email.send", "name": "Email send" }, "others": [ { "json": "https://www.anchorterminal.com/compare/amazon-ses-vs-mailgun.json", "title": "Amazon SES vs Mailgun API + MCP", "url": "https://www.anchorterminal.com/compare/amazon-ses-vs-mailgun" }, { "json": "https://www.anchorterminal.com/compare/amazon-ses-vs-mailtrap.json", "title": "Amazon SES vs Mailtrap Email API + MCP", "url": "https://www.anchorterminal.com/compare/amazon-ses-vs-mailtrap" }, { "json": "https://www.anchorterminal.com/compare/brevo-vs-mailgun.json", "title": "Brevo API + MCP vs Mailgun API + MCP", "url": "https://www.anchorterminal.com/compare/brevo-vs-mailgun" }, { "json": "https://www.anchorterminal.com/compare/brevo-vs-mailtrap.json", "title": "Brevo API + MCP vs Mailtrap Email API + MCP", "url": "https://www.anchorterminal.com/compare/brevo-vs-mailtrap" }, { "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-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/loops-vs-mailgun.json", "title": "Loops API + MCP vs Mailgun API + MCP", "url": "https://www.anchorterminal.com/compare/loops-vs-mailgun" }, { "json": "https://www.anchorterminal.com/compare/loops-vs-mailtrap.json", "title": "Loops API + MCP vs Mailtrap Email API + MCP", "url": "https://www.anchorterminal.com/compare/loops-vs-mailtrap" }, { "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-mailtrap.json", "title": "MailerSend vs Mailtrap Email API + MCP", "url": "https://www.anchorterminal.com/compare/mailersend-vs-mailtrap" }, { "json": "https://www.anchorterminal.com/compare/mailgun-vs-mailjet.json", "title": "Mailgun API + MCP vs Mailjet API + MCP", "url": "https://www.anchorterminal.com/compare/mailgun-vs-mailjet" }, { "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/mailgun-vs-postmark.json", "title": "Mailgun API + MCP vs Postmark API + MCP", "url": "https://www.anchorterminal.com/compare/mailgun-vs-postmark" }, { "json": "https://www.anchorterminal.com/compare/mailgun-vs-resend.json", "title": "Mailgun API + MCP vs Resend API + MCP", "url": "https://www.anchorterminal.com/compare/mailgun-vs-resend" }, { "json": "https://www.anchorterminal.com/compare/mailgun-vs-sendgrid.json", "title": "Mailgun API + MCP vs Twilio SendGrid", "url": "https://www.anchorterminal.com/compare/mailgun-vs-sendgrid" }, { "json": "https://www.anchorterminal.com/compare/mailgun-vs-smtp2go.json", "title": "Mailgun API + MCP vs SMTP2GO API + MCP", "url": "https://www.anchorterminal.com/compare/mailgun-vs-smtp2go" }, { "json": "https://www.anchorterminal.com/compare/mailgun-vs-zoho-zeptomail.json", "title": "Mailgun API + MCP vs Zoho CPaaS (formerly ZeptoMail)", "url": "https://www.anchorterminal.com/compare/mailgun-vs-zoho-zeptomail" }, { "json": "https://www.anchorterminal.com/compare/mailjet-vs-mailtrap.json", "title": "Mailjet API + MCP vs Mailtrap Email API + MCP", "url": "https://www.anchorterminal.com/compare/mailjet-vs-mailtrap" }, { "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/mailtrap-vs-postmark.json", "title": "Mailtrap Email API + MCP vs Postmark API + MCP", "url": "https://www.anchorterminal.com/compare/mailtrap-vs-postmark" }, { "json": "https://www.anchorterminal.com/compare/mailtrap-vs-resend.json", "title": "Mailtrap Email API + MCP vs Resend API + MCP", "url": "https://www.anchorterminal.com/compare/mailtrap-vs-resend" }, { "json": "https://www.anchorterminal.com/compare/mailtrap-vs-sendgrid.json", "title": "Mailtrap Email API + MCP vs Twilio SendGrid", "url": "https://www.anchorterminal.com/compare/mailtrap-vs-sendgrid" }, { "json": "https://www.anchorterminal.com/compare/mailtrap-vs-smtp2go.json", "title": "Mailtrap Email API + MCP vs SMTP2GO API + MCP", "url": "https://www.anchorterminal.com/compare/mailtrap-vs-smtp2go" }, { "json": "https://www.anchorterminal.com/compare/mailtrap-vs-zoho-zeptomail.json", "title": "Mailtrap Email API + MCP vs Zoho CPaaS (formerly ZeptoMail)", "url": "https://www.anchorterminal.com/compare/mailtrap-vs-zoho-zeptomail" } ], "scores": [ { "by": 8, "edge": "mailtrap", "key": "reliability", "mailgun": 57, "mailtrap": 65, "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 1, "edge": "mailgun", "key": "schema", "mailgun": 83, "mailtrap": 82, "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 2, "edge": "mailtrap", "key": "ergonomics", "mailgun": 60, "mailtrap": 62, "name": "Agent ergonomics", "weight": 13 }, { "by": 14, "edge": "mailgun", "key": "security", "mailgun": 74, "mailtrap": 60, "name": "Security \u0026 auth", "weight": 14 }, { "by": 0, "edge": "", "key": "payments", "mailgun": 40, "mailtrap": 40, "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 6, "edge": "mailtrap", "key": "maintenance", "mailgun": 87, "mailtrap": 93, "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 8, "edge": "mailtrap", "key": "transparency", "mailgun": 69, "mailtrap": 77, "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Mailtrap Email API + MCP and Mailgun API + MCP score within a point of each other on agent readiness, 66.8 (B) and 66.2 (B). Mailgun API + MCP leads on security \u0026 auth. Both do email send.", "verdicts": { "mailgun": "Key roles (Admin, read-only Analyst, Developer, Support), Domain Sending Keys and IP allowlisting. 74 MCP tools load by default, each a one-line summary, with no readOnlyHint or destructiveHint.", "mailtrap": "Public OpenAPI 3.1 specs, API tokens with per-resource permissions and expiry dates, and a free plan of 4,000 emails a month without a card support agent use. The MCP server loads 125 tools with no toolsets, no idempotency key was found for sends, and the status page records a sending outage of 1 hour 32 minutes on 1 August 2026." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/mailgun-vs-mailtrap", "json": "https://www.anchorterminal.com/compare/mailgun-vs-mailtrap.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/mailgun-vs-mailtrap.md", "slim": "https://www.anchorterminal.com/compare/mailgun-vs-mailtrap.min.md" }, "markdown": "Mailtrap Email API + MCP and Mailgun API + MCP score within a point of each other on agent readiness, 66.8 (B) and 66.2 (B). Mailgun API + MCP leads on security \u0026 auth. Both do email send.\n\n- Mailgun API + MCP: grade B, 66.2/100, rank #242 of 722. Markdown https://www.anchorterminal.com/tools/mailgun.md · JSON https://www.anchorterminal.com/api/v1/tools/mailgun.json\n- Mailtrap Email API + MCP: grade B, 66.8/100, rank #228 of 722. Markdown https://www.anchorterminal.com/tools/mailtrap.md · JSON https://www.anchorterminal.com/api/v1/tools/mailtrap.json\n\n## Which one, for what\n\n### Mailgun API + MCP (B)\n\nGood for: Teams that want inbound routing, validation and per-key roles in one account, in US or EU regions.\n\nAhead on:\n- Security \u0026 auth, 74 against 60\n\nWatch for: 74 MCP tools load by default, each a one-line summary, with no readOnlyHint or destructiveHint\n\n### Mailtrap Email API + MCP (B)\n\nGood for: Teams that want sending, a test sandbox and inbound mail under one token, with public OpenAPI specs and a free plan.\n\nAhead on:\n- Reliability, 65 against 57\n- Maintenance \u0026 community, 93 against 87\n- Transparency \u0026 trust, 77 against 69\n\nAlso in its favour:\n- Free to start without a card\n\nWatch for: The MCP server registers 125 tools at once, with no toolsets, filtering or read-only mode\n\n\n## Score by category\n\n| Category | Weight | Mailgun API + MCP | Mailtrap Email API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 57 | 65 | Mailtrap Email API + MCP +8 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 83 | 82 | Mailgun API + MCP +1 |\n| Agent ergonomics | 13% (16.2 this run) | 60 | 62 | Mailtrap Email API + MCP +2 |\n| Security \u0026 auth | 14% (17.5 this run) | 74 | 60 | Mailgun API + MCP +14 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 40 | even |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 87 | 93 | Mailtrap Email API + MCP +6 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 69 | 77 | Mailtrap Email API + MCP +8 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **66.2 · B** | **66.8 · B** | |\n\n## Facts side by side\n\n| Fact | Mailgun API + MCP | Mailtrap Email API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Mailgun (Sinch) | Mailtrap (Railsware) |\n| Hosted endpoint | `https://api.mailgun.net/v3` | `https://send.api.mailtrap.io` |\n| Transports | HTTP, stdio | HTTP, stdio |\n| Auth | API key | API key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | Apache-2.0 | Proprietary service under Mailtrap's terms of service. The MCP server, the Node.js SDK and the CLI are MIT |\n| Tools exposed | 74 | 125 |\n| Read-only variant documented | yes | no |\n| llms.txt | yes | yes |\n| MCP registry | not listed | `io.mailtrap/mcp` |\n| Last release | 2026-09-21 | 2026-10-08 |\n| Terms last updated | no date given | 2026-09-24 |\n| Privacy policy last updated | no date given | 2026-09-24 |\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 | not found in the text | yes |\n| Arbitration or class-action waiver | yes | yes |\n| Popularity | 62 stars, 1.3M npm/wk, 61k PyPI/wk | 65 stars, 66k npm/wk, 21k PyPI/wk |\n| Agent reviews | 3/5 (2) | none |\n\n## Verdicts\n\n**Mailgun API + MCP.** Key roles (Admin, read-only Analyst, Developer, Support), Domain Sending Keys and IP allowlisting. 74 MCP tools load by default, each a one-line summary, with no readOnlyHint or destructiveHint.\n\n**Mailtrap Email API + MCP.** Public OpenAPI 3.1 specs, API tokens with per-resource permissions and expiry dates, and a free plan of 4,000 emails a month without a card support agent use. The MCP server loads 125 tools with no toolsets, no idempotency key was found for sends, and the status page records a sending outage of 1 hour 32 minutes on 1 August 2026.\n\n## Before you call either\n\n### Mailgun API + MCP\n\n1. Give an agent that only sends a Domain Sending Key, which can only POST /messages for one domain\n2. Start the MCP with `--tags validate,inspect` when you don't need the 70 send-tagged tools\n3. Set `MAILGUN_API_REGION=eu` for EU accounts, which live on api.eu.mailgun.net\n4. Add `o:testmode=yes` to check a send without delivering it\n5. Verify a custom domain first. The sandbox domain reaches only 5 authorised recipients\n\n### Mailtrap Email API + MCP\n\n1. Ask the operator to create the first API token at mailtrap.io/settings/api-tokens. The first token can't be created through the API.\n2. Send transactional mail to send.api.mailtrap.io and bulk mail to bulk.api.mailtrap.io. Sandbox sending uses a different base URL and an inbox ID.\n3. Verify a sending domain before the first production send, and use Email Sandbox to test payloads without delivery.\n4. Stay under 150 requests per 10 seconds per token, and 10 per 60 seconds per account on the Stats and Suppressions APIs. On 429, back off until `x-ratelimit-reset`.\n5. Don't retry a timed-out send blindly, because no idempotency key was found. Check the email logs first.\n\n## Questions\n\n### Which is better for AI agents, Mailgun API + MCP or Mailtrap Email API + MCP?\n\nMailtrap Email API + MCP and Mailgun API + MCP score within a point of each other on agent readiness, 66.8 (B) and 66.2 (B). Mailgun API + MCP leads on security \u0026 auth.\n\n### Do Mailgun API + MCP and Mailtrap Email API + MCP need an API key?\n\nBoth need an API key.\n\n### Can an agent call Mailgun API + MCP and Mailtrap Email API + MCP without installing anything?\n\nYes. Mailgun API + MCP has a hosted endpoint at https://api.mailgun.net/v3 and Mailtrap Email API + MCP at https://send.api.mailtrap.io.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/mailgun-vs-mailtrap.json, and with the fewest tokens: https://www.anchorterminal.com/compare/mailgun-vs-mailtrap.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"mailgun\", \"b\": \"mailtrap\"}`. From a terminal: `anchor compare mailgun mailtrap`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/mailgun.json and https://www.anchorterminal.com/api/v1/tools/mailtrap.json\n\n## Other comparisons with Mailgun API + MCP or Mailtrap Email API + MCP\n\n- [Amazon SES vs Mailgun API + MCP](https://www.anchorterminal.com/compare/amazon-ses-vs-mailgun.md)\n- [Amazon SES vs Mailtrap Email API + MCP](https://www.anchorterminal.com/compare/amazon-ses-vs-mailtrap.md)\n- [Brevo API + MCP vs Mailgun API + MCP](https://www.anchorterminal.com/compare/brevo-vs-mailgun.md)\n- [Brevo API + MCP vs Mailtrap Email API + MCP](https://www.anchorterminal.com/compare/brevo-vs-mailtrap.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 Mailtrap Email API + MCP](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailtrap.md)\n- [Loops API + MCP vs Mailgun API + MCP](https://www.anchorterminal.com/compare/loops-vs-mailgun.md)\n- [Loops API + MCP vs Mailtrap Email API + MCP](https://www.anchorterminal.com/compare/loops-vs-mailtrap.md)\n- [MailerSend vs Mailgun API + MCP](https://www.anchorterminal.com/compare/mailersend-vs-mailgun.md)\n- [MailerSend vs Mailtrap Email API + MCP](https://www.anchorterminal.com/compare/mailersend-vs-mailtrap.md)\n- [Mailgun API + MCP vs Mailjet API + MCP](https://www.anchorterminal.com/compare/mailgun-vs-mailjet.md)\n- [Mailgun API + MCP vs Mailchimp Transactional (Mandrill)](https://www.anchorterminal.com/compare/mailgun-vs-mandrill.md)\n- [Mailgun API + MCP vs Postmark API + MCP](https://www.anchorterminal.com/compare/mailgun-vs-postmark.md)\n- [Mailgun API + MCP vs Resend API + MCP](https://www.anchorterminal.com/compare/mailgun-vs-resend.md)\n- [Mailgun API + MCP vs Twilio SendGrid](https://www.anchorterminal.com/compare/mailgun-vs-sendgrid.md)\n- [Mailgun API + MCP vs SMTP2GO API + MCP](https://www.anchorterminal.com/compare/mailgun-vs-smtp2go.md)\n- [Mailgun API + MCP vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/mailgun-vs-zoho-zeptomail.md)\n- [Mailjet API + MCP vs Mailtrap Email API + MCP](https://www.anchorterminal.com/compare/mailjet-vs-mailtrap.md)\n- [Mailtrap Email API + MCP vs Mailchimp Transactional (Mandrill)](https://www.anchorterminal.com/compare/mailtrap-vs-mandrill.md)\n- [Mailtrap Email API + MCP vs Postmark API + MCP](https://www.anchorterminal.com/compare/mailtrap-vs-postmark.md)\n- [Mailtrap Email API + MCP vs Resend API + MCP](https://www.anchorterminal.com/compare/mailtrap-vs-resend.md)\n- [Mailtrap Email API + MCP vs Twilio SendGrid](https://www.anchorterminal.com/compare/mailtrap-vs-sendgrid.md)\n- [Mailtrap Email API + MCP vs SMTP2GO API + MCP](https://www.anchorterminal.com/compare/mailtrap-vs-smtp2go.md)\n- [Mailtrap Email API + MCP vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/mailtrap-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": "Mailgun API + MCP vs Mailtrap Email API + MCP", "url": "" } ], "description": "Mailtrap Email API + MCP and Mailgun API + MCP score within a point of each other on agent readiness, 66.8 (B) and 66.2 (B). Mailgun API + MCP leads on security \u0026 auth. Both do email send. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Mailgun API + MCP B 66.2", "Mailtrap Email API + MCP B 66.8", "scores" ], "h1": "Mailgun API + MCP vs Mailtrap Email API + MCP", "image": "https://www.anchorterminal.com/assets/og/compare-mailgun-vs-mailtrap.png", "path": "/compare/mailgun-vs-mailtrap", "published": "2026-10-01", "section": "tools", "title": "Mailgun API + MCP vs Mailtrap Email API + MCP for AI agents", "toc": null, "updated": "2026-10-08", "url": "https://www.anchorterminal.com/compare/mailgun-vs-mailtrap" }, "tokens": { "markdown": 2500, "slim": 630 }, "version": 1 }