{ "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": 66.3, "grade": "B", "agentReady": false, "rank": 161, "ranked": true, "rankOf": 452, "categoryRank": 4, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 60, "maintenance": 87, "payments": 40, "reliability": 57, "schema": 83, "security": 74, "transparency": 70 }, "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.", "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": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 66.3 } ], "editorialScores": { "ergonomics": 60, "maintenance": 87, "payments": 40, "reliability": 57, "schema": 83, "security": 74, "transparency": 64 }, "provenanceScore": 75 }, "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": 75 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/mailgun.json", "live": { "slug": "mailgun", "probe": { "target": "https://api.mailgun.net/v3", "method": "get", "lastAt": "2026-10-04T23:32:50.183029235Z", "lastOk": true, "lastStatus": 404, "lastMs": 478, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 432, "p95ms24h": 516, "samples24h": 272, "samples30d": 1097, "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": 267, "ok": 267 } ] }, "vendorStatus": { "page": "https://status.mailgun.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-04T23:27:53.608413344Z" }, "versions": [ { "registry": "github", "name": "mailgun/mailgun-mcp-server", "version": "v2.1.3", "released": "2026-09-16", "seenAt": "2026-10-04T16:32:20.749286815Z" }, { "registry": "npm", "name": "@mailgun/mcp-server", "version": "2.1.3", "seenAt": "2026-10-04T16:32:19.12567979Z" }, { "registry": "npm", "name": "mailgun.js", "version": "14.0.1", "seenAt": "2026-10-04T16:32:18.541074666Z" }, { "registry": "pypi", "name": "mailgun", "version": "1.9.1", "released": "2026-09-21", "seenAt": "2026-10-04T16:32:18.941173123Z" } ], "githubStars": 62, "npmWeekly": 1332690, "pypiWeekly": 59247, "securityTxt": { "url": "https://mailgun.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-04T15:15:37.071083647Z" }, "llmsTxt": { "url": "https://documentation.mailgun.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-04T15:17:57.750848902Z" }, "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": "2026-10-04T15:44:22.390549812Z", "changedAt": "2026-10-04T15:44:22.390549812Z", "fingerprint": "68dcb6c993b9" }, { "url": "https://www.mailgun.com/pricing/", "kind": "pricing", "status": 304, "checkedAt": "2026-10-04T15:51:15.094065893Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "dbcce09b527b" }, { "url": "https://www.mailgun.com/legal/privacy-policy/", "kind": "privacy", "status": 304, "checkedAt": "2026-10-04T15:51:11.076853141Z", "changedAt": "2026-10-02T15:27:12.688197359Z", "fingerprint": "213ddc77ab01" }, { "url": "https://www.mailgun.com/legal/terms/", "kind": "terms", "status": 304, "checkedAt": "2026-10-04T15:51:13.095370386Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "e68fb8d6980b" } ], "updatedAt": "2026-10-04T23:32:50.183029235Z" } }, "b": { "slug": "mailjet", "name": "Mailjet API + MCP", "vendor": "Mailjet (Sinch)", "vendorUrl": "https://www.mailjet.com", "kind": "http-api", "category": "email", "summary": "Sinch-owned email API with Send API v3.1, SMTP relay, a Parse API for inbound mail, templates and a marketing editor.", "url": "https://www.anchorterminal.com/tools/mailjet", "markdownUrl": "https://www.anchorterminal.com/tools/mailjet.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/mailjet.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/mailjet.json", "repo": "https://github.com/mailjet/mailjet-apiv3-nodejs", "license": "MIT", "transports": [ "http", "stdio" ], "remoteUrl": "https://api.mailjet.com/v3.1", "packages": [ { "registry": "npm", "name": "node-mailjet" }, { "registry": "npm", "name": "@mailjet/mailjet-mcp-server" }, { "registry": "pypi", "name": "mailjet-rest" } ], "auth": "api-key", "authNotes": "HTTP Basic auth with the public API key as user and the secret key as password. The MCP server takes both as MAILJET_API_KEY in `key:secret` form, and MAILJET_API_REGION=eu switches to EU servers.", "pricing": "freemium", "pricingNotes": "Free 6,000 emails a month capped at 200 a day, no card. Starter $9 a month (8,000 emails), Essential $19 (15,000), Premium $29 (15,000), with prices rising by volume and 10 per cent off yearly. Emails over the plan are billed per extra 1,000 at a rate published in the help centre, which we couldn't read. Enterprise on quote (https://www.mailjet.com/pricing/).", "priceSummary": "$9 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402 or stablecoin payment path in docs or pricing (checked 2026-09-30).", "endpoints": [] }, "toolCount": 117, "popularity": { "githubStars": 255, "npmWeekly": 177150, "pypiWeekly": 244633, "asOf": "2026-09-30" }, "docsUrl": "https://dev.mailjet.com", "llmsTxt": "https://dev.mailjet.com/llms.txt", "openapi": "https://dev.mailjet.com/_bundle/openapi/openapi-mailjet.yaml", "capabilities": [ "email.send", "email.inbound", "email.templates", "email.domains", "email.analytics", "email.marketing" ], "tags": [ "hosted", "freemium", "no-card", "mcp", "llms-txt", "openapi", "typescript", "python", "webhooks" ], "lastRelease": "2026-09-14", "graded": true, "anchor": { "graded": true, "score": 59.5, "grade": "C", "agentReady": false, "rank": 264, "ranked": true, "rankOf": 452, "categoryRank": 7, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 53, "maintenance": 79, "payments": 30, "reliability": 62, "schema": 76, "security": 52, "transparency": 73 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "SandboxMode on Send API v3.1 validates a payload without delivering it. The MCP server registers 117 GET-only tools and can't send.", "strengths": [ "SandboxMode on Send API v3.1 validates a payload without delivering it", "Data stored on Google Cloud in Frankfurt and Saint-Ghislain", "Parse API routes inbound mail to a webhook", "OpenAPI files, llms.txt and Markdown pages", "Free plan of 6,000 emails a month with no card" ], "weaknesses": [ "The MCP server registers 117 GET-only tools and can't send", "No numeric rate limits published", "Price per extra 1,000 emails isn't on the pricing page", "No bug bounty, disclosure policy or security.txt found", "npm has MCP 1.1.0 while the git tags stop at a beta" ], "agentNotes": [ "Set `SandboxMode` to true on the first sends to check payloads without delivering", "Send with POST /v3.1/send and a `Messages` array, many messages per call", "Use the MCP for statistics and contact lookups only, since it can't send", "Pass `MAILJET_API_KEY` as `key:secret`. The server checks it at startup and exits if it's wrong", "On 429, wait and retry. Non-transactional endpoints have much lower limits than send" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 2.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 59.5 } ], "editorialScores": { "ergonomics": 53, "maintenance": 79, "payments": 30, "reliability": 62, "schema": 76, "security": 52, "transparency": 55 }, "provenanceScore": 90 }, "connect": { "http": "curl -X POST https://api.mailjet.com/v3.1/send --user \"$MJ_APIKEY_PUBLIC:$MJ_APIKEY_PRIVATE\" \\\n -H \"Content-Type: application/json\" -d '{\"Messages\":[{\"From\":{\"Email\":\"you@example.com\"},\"To\":[{\"Email\":\"them@example.com\"}],\"Subject\":\"Hello\",\"TextPart\":\"Hello from Mailjet\"}]}'", "claudeCode": "claude mcp add mailjet -e MAILJET_API_KEY=\"$MJ_APIKEY_PUBLIC:$MJ_APIKEY_PRIVATE\" -- npx -y @mailjet/mailjet-mcp-server", "config": { "mcpServers": { "mailjet": { "args": [ "-y", "@mailjet/mailjet-mcp-server" ], "command": "npx", "env": { "MAILJET_API_KEY": "${MJ_APIKEY_PUBLIC}:${MJ_APIKEY_PRIVATE}" } } } } }, "letme": { "capability": "https://letme.dev/email.send", "tool": "https://letme.dev/mailjet" }, "area": "communication", "unitPrices": [ { "item": "Starter", "unit": "month", "usd": 9, "note": "8,000 emails a month" }, { "item": "Essential", "unit": "month", "usd": 19, "note": "15,000 emails a month" }, { "item": "Premium", "unit": "month", "usd": 29, "note": "15,000 emails a month, automations and dedicated IP from 100k" } ], "provenance": { "legalEntity": "Mailjet SAS", "domain": "mailjet.com", "domainRegistered": "2006-11-08", "endpointOnVendorDomain": true, "terms": "https://www.mailjet.com/legal/terms/", "privacy": "https://www.mailjet.com/legal/privacy-policy/", "statusPage": "https://mailjet.statuspage.io/", "changelog": "https://www.mailjet.com/releases/", "securityTxt": "none", "checked": "2026-09-30", "notes": [ "Mailjet is a Sinch brand. The terms list Mailjet SAS, Mailjet GmbH and Mailgun Technologies, Inc. as contracting entities depending on the customer." ], "score": 90 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/mailjet.json", "live": { "slug": "mailjet", "probe": { "target": "https://api.mailjet.com/v3.1", "method": "get", "lastAt": "2026-10-04T23:32:50.235040455Z", "lastOk": true, "lastStatus": 404, "lastMs": 44, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 48, "p95ms24h": 139, "samples24h": 272, "samples30d": 1097, "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": 267, "ok": 267 } ] }, "vendorStatus": { "page": "https://mailjet.statuspage.io", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-04T23:27:53.63256735Z" }, "versions": [ { "registry": "github", "name": "mailjet/mailjet-apiv3-nodejs", "version": "v7.1.0", "released": "2026-08-19", "seenAt": "2026-10-04T16:32:25.488655721Z" }, { "registry": "npm", "name": "@mailjet/mailjet-mcp-server", "version": "1.1.0", "seenAt": "2026-10-04T16:32:23.608016042Z" }, { "registry": "npm", "name": "node-mailjet", "version": "6.0.11", "seenAt": "2026-10-04T16:32:23.044348854Z" }, { "registry": "pypi", "name": "mailjet-rest", "version": "1.9.0", "released": "2026-09-14", "seenAt": "2026-10-04T16:32:25.305171581Z" } ], "githubStars": 255, "npmWeekly": 187414, "pypiWeekly": 238046, "securityTxt": { "url": "https://mailjet.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-04T15:15:42.087773455Z" }, "llmsTxt": { "url": "https://dev.mailjet.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-04T15:17:57.772258273Z" }, "domain": { "domain": "mailjet.com", "registered": "2006-11-08", "source": "https://rdap.verisign.com/com/v1/domain/mailjet.com", "checkedAt": "2026-10-04T13:08:17.150993109Z" }, "pages": [ { "url": "https://www.mailjet.com/releases/", "kind": "changelog", "status": 200, "checkedAt": "2026-10-04T15:51:18.13806271Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "67d03918114f" }, { "url": "https://www.mailjet.com/pricing/", "kind": "pricing", "status": 304, "checkedAt": "2026-10-04T15:51:16.153493813Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "ca0a13159f03" }, { "url": "https://www.mailjet.com/legal/privacy-policy/", "kind": "privacy", "status": 304, "checkedAt": "2026-10-04T15:51:12.111220481Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "43ec4206a3d6" }, { "url": "https://www.mailjet.com/legal/terms/", "kind": "terms", "status": 304, "checkedAt": "2026-10-04T15:51:14.142260312Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "bd8f1e18634f" } ], "updatedAt": "2026-10-04T23:32:50.235040455Z" } }, "summary": "Mailgun API + MCP has a score of 66.3 (B) against Mailjet API + MCP's 59.5 (C). Both do email send. The largest gap is security \u0026 auth, 22 points." }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/mailgun-vs-mailjet", "json": "https://www.anchorterminal.com/compare/mailgun-vs-mailjet.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/mailgun-vs-mailjet.md", "slim": "https://www.anchorterminal.com/compare/mailgun-vs-mailjet.min.md" }, "markdown": "Mailgun API + MCP has a score of 66.3 (B) against Mailjet API + MCP's 59.5 (C). Both do email send. The largest gap is security \u0026 auth, 22 points.\n\n- Mailgun API + MCP: grade B, 66.3/100, rank #161 of 452. Markdown https://www.anchorterminal.com/tools/mailgun.md · JSON https://www.anchorterminal.com/api/v1/tools/mailgun.json\n- Mailjet API + MCP: grade C, 59.5/100, rank #264 of 452. Markdown https://www.anchorterminal.com/tools/mailjet.md · JSON https://www.anchorterminal.com/api/v1/tools/mailjet.json\n\n## Which one, for what\n\nPick Mailgun API + MCP for schema \u0026 documentation (+7), agent ergonomics (+7), security \u0026 auth (+22), payments \u0026 pricing (+10), maintenance \u0026 community (+8).\n\nPick Mailjet API + MCP for reliability (+5).\n\n## Score by category\n\n| Category | Weight | Mailgun API + MCP | Mailjet API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 57 | 62 | Mailjet API + MCP +5 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 83 | 76 | Mailgun API + MCP +7 |\n| Agent ergonomics | 13% (16.2 this run) | 60 | 53 | Mailgun API + MCP +7 |\n| Security \u0026 auth | 14% (17.5 this run) | 74 | 52 | Mailgun API + MCP +22 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 30 | Mailgun API + MCP +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 87 | 79 | Mailgun API + MCP +8 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 70 | 73 | Mailjet API + MCP +3 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **66.3 · B** | **59.5 · C** | |\n\n## Facts side by side\n\n| Fact | Mailgun API + MCP | Mailjet API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Mailgun (Sinch) | Mailjet (Sinch) |\n| Hosted endpoint | `https://api.mailgun.net/v3` | `https://api.mailjet.com/v3.1` |\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 | MIT |\n| Tools exposed | 74 | 117 |\n| Context cost (tools/list) | n/a | n/a |\n| p95 latency | not measured yet | not measured yet |\n| Availability (30d) | not measured yet | not measured yet |\n| Read-only variant documented | yes | no |\n| llms.txt | yes | yes |\n| MCP registry | not listed | not listed |\n| Last release | 2026-09-21 | 2026-09-14 |\n| Popularity | 62 stars, 1.3M npm/wk, 61k PyPI/wk | 255 stars, 177k npm/wk, 245k PyPI/wk |\n| Agent reviews | 3/5 (2) | 2.5/5 (2) |\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**Mailjet API + MCP.** SandboxMode on Send API v3.1 validates a payload without delivering it. The MCP server registers 117 GET-only tools and can't send.\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### Mailjet API + MCP\n\n1. Set `SandboxMode` to true on the first sends to check payloads without delivering\n2. Send with POST /v3.1/send and a `Messages` array, many messages per call\n3. Use the MCP for statistics and contact lookups only, since it can't send\n4. Pass `MAILJET_API_KEY` as `key:secret`. The server checks it at startup and exits if it's wrong\n5. On 429, wait and retry. Non-transactional endpoints have much lower limits than send\n\n## Other comparisons with Mailgun API + MCP or Mailjet API + MCP\n\n- [Amazon SES vs Mailgun API + MCP](https://www.anchorterminal.com/compare/amazon-ses-vs-mailgun.md)\n- [Amazon SES vs Mailjet API + MCP](https://www.anchorterminal.com/compare/amazon-ses-vs-mailjet.md)\n- [Brevo API + MCP vs Mailgun API + MCP](https://www.anchorterminal.com/compare/brevo-vs-mailgun.md)\n- [Brevo API + MCP vs Mailjet API + MCP](https://www.anchorterminal.com/compare/brevo-vs-mailjet.md)\n- [Loops API + MCP vs Mailgun API + MCP](https://www.anchorterminal.com/compare/loops-vs-mailgun.md)\n- [Loops API + MCP vs Mailjet API + MCP](https://www.anchorterminal.com/compare/loops-vs-mailjet.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- [Mailjet API + MCP vs Postmark API + MCP](https://www.anchorterminal.com/compare/mailjet-vs-postmark.md)\n- [Mailjet API + MCP vs Resend API + MCP](https://www.anchorterminal.com/compare/mailjet-vs-resend.md)\n- [Mailjet API + MCP vs Twilio SendGrid](https://www.anchorterminal.com/compare/mailjet-vs-sendgrid.md)\n- [Mailjet API + MCP vs SMTP2GO API + MCP](https://www.anchorterminal.com/compare/mailjet-vs-smtp2go.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-04", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.3", "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 Mailjet API + MCP", "url": "" } ], "description": "Mailgun API + MCP has a score of 66.3 (B) against Mailjet API + MCP's 59.5 (C). Both do email send. The largest gap is security \u0026 auth, 22 points. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Mailgun API + MCP B 66.3", "Mailjet API + MCP C 59.5", "scores" ], "h1": "Mailgun API + MCP vs Mailjet API + MCP", "image": "https://www.anchorterminal.com/assets/og/compare-mailgun-vs-mailjet.png", "path": "/compare/mailgun-vs-mailjet", "published": "2026-10-01", "section": "tools", "title": "Mailgun API + MCP vs Mailjet API + MCP for AI agents, B 66.3 vs C 59.5", "toc": null, "updated": "2026-10-04", "url": "https://www.anchorterminal.com/compare/mailgun-vs-mailjet" }, "tokens": { "markdown": 1500, "slim": 330 }, "version": 1 }