{ "data": { "a": { "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": "2026-10-05T02:29:58.46738217Z", "lastOk": true, "lastStatus": 404, "lastMs": 51, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 48, "p95ms24h": 140, "samples24h": 273, "samples30d": 1131, "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": 29, "ok": 29 } ] }, "vendorStatus": { "page": "https://mailjet.statuspage.io", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-05T02:29:04.226450309Z" }, "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": "2026-10-05T02:29:58.46738217Z" } }, "b": { "slug": "sendgrid", "name": "Twilio SendGrid", "vendor": "Twilio", "vendorUrl": "https://sendgrid.com", "kind": "http-api", "category": "email", "summary": "Email API v3 for transactional mail, with Inbound Parse, dynamic templates, suppressions and Marketing Campaigns.", "url": "https://www.anchorterminal.com/tools/sendgrid", "markdownUrl": "https://www.anchorterminal.com/tools/sendgrid.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/sendgrid.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/sendgrid.json", "repo": "https://github.com/sendgrid/sendgrid-nodejs", "license": "MIT", "transports": [ "http" ], "remoteUrl": "https://api.sendgrid.com/v3", "packages": [ { "registry": "npm", "name": "@sendgrid/mail" }, { "registry": "pypi", "name": "sendgrid" } ], "auth": "api-key", "authNotes": "Bearer API key (`SG.`) with full, restricted or billing access and per-scope permissions. Subusers get their own keys.", "pricing": "paid", "pricingNotes": "Free trial of 100 emails a day for 60 days, no card. Essentials $19.95 a month for 50,000 emails or $34.95 for 100,000. Pro $89.95 for 100,000, $249 for 300,000 and $499 for 700,000, with a dedicated IP and 2,500 validations. Premier is custom. Overage rates aren't listed on the pricing page (https://www.twilio.com/en-us/products/email-api/pricing).", "priceSummary": "$19.95 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402 support in docs, pricing or MCP README (checked 2026-09-30).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 3052, "npmWeekly": 5457252, "pypiWeekly": 4577455, "asOf": "2026-09-30" }, "docsUrl": "https://www.twilio.com/docs/sendgrid", "llmsTxt": "https://www.twilio.com/docs/llms.txt", "openapi": "https://raw.githubusercontent.com/twilio/sendgrid-oai/main/spec/json/tsg_mail_v3.json", "capabilities": [ "email.send", "email.inbound", "email.templates", "email.domains", "email.analytics", "email.marketing" ], "tags": [ "hosted", "no-card", "llms-txt", "openapi", "typescript", "python", "webhooks", "enterprise" ], "lastRelease": "2025-09-19", "graded": true, "anchor": { "graded": true, "score": 63.6, "grade": "B", "agentReady": false, "rank": 202, "ranked": true, "rankOf": 452, "categoryRank": 5, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 60, "maintenance": 47, "payments": 30, "reliability": 66, "schema": 72, "security": 81, "transparency": 79 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Restricted API keys with per-endpoint scopes, subuser keys and IP access management. No official MCP server that can send, only Twilio's docs search.", "strengths": [ "Restricted API keys with per-endpoint scopes, subuser keys and IP access management", "OpenAPI 3.1 specs for the whole v3 API", "Inbound Parse and Marketing Campaigns in one account", "Twilio SOC 2 Type II, ISO 27001 and a HackerOne bug bounty", "Subprocessors listed with locations, updated September 2026" ], "weaknesses": [ "No official MCP server that can send, only Twilio's docs search", "Node and Python SDKs last released on 19 September 2025, Go on 29 May 2025", "Free plan is a 60-day trial, not a standing free tier", "Overage rates and numeric rate limits aren't published", "No idempotency key on mail/send" ], "agentNotes": [ "Give an agent that only sends a restricted key with just `mail.send`", "Set `mail_settings.sandbox_mode` to validate payloads without delivery", "Authenticate a domain or verify a single sender before the first send", "Read X-RateLimit-Remaining and X-RateLimit-Reset and wait for the reset on 429", "Don't blindly retry a timed-out mail/send. There's no idempotency key, so the message can go out twice" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 2.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 63.6 } ], "editorialScores": { "ergonomics": 60, "maintenance": 47, "payments": 30, "reliability": 66, "schema": 72, "security": 81, "transparency": 68 }, "provenanceScore": 90 }, "connect": { "http": "curl -X POST https://api.sendgrid.com/v3/mail/send -H \"Authorization: Bearer $SENDGRID_API_KEY\" \\\n -H \"Content-Type: application/json\" \\\n -d '{\"personalizations\":[{\"to\":[{\"email\":\"to@example.com\"}]}],\"from\":{\"email\":\"from@example.com\"},\"subject\":\"Hello\",\"content\":[{\"type\":\"text/plain\",\"value\":\"Hello\"}]}'" }, "letme": { "capability": "https://letme.dev/email.send", "tool": "https://letme.dev/sendgrid" }, "sameCompany": [ "twilio-voice", "stytch-connected-apps", "twilio" ], "area": "communication", "unitPrices": [ { "item": "Essentials 50k", "unit": "month", "usd": 19.95, "note": "50,000 emails" }, { "item": "Essentials 100k", "unit": "month", "usd": 34.95, "note": "100,000 emails" }, { "item": "Pro 100k", "unit": "month", "usd": 89.95, "note": "100,000 emails, 1 dedicated IP" }, { "item": "Pro 300k", "unit": "month", "usd": 249, "note": "300,000 emails" }, { "item": "Pro 700k", "unit": "month", "usd": 499, "note": "700,000 emails" } ], "provenance": { "legalEntity": "Twilio Inc.", "domain": "sendgrid.com", "domainRegistered": "2009-04-20", "endpointOnVendorDomain": true, "terms": "https://www.twilio.com/en-us/legal/tos", "privacy": "https://www.twilio.com/en-us/legal/privacy", "statusPage": "https://status.twilio.com", "changelog": "https://www.twilio.com/en-us/changelog", "securityTxt": "unknown", "checked": "2026-09-30", "notes": [ "sendgrid.com returns 403 for /.well-known/security.txt, and sendgrid.com pricing now redirects to twilio.com." ], "score": 90 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/sendgrid.json", "live": { "slug": "sendgrid", "probe": { "target": "https://api.sendgrid.com/v3", "method": "get", "lastAt": "2026-10-05T02:30:02.425806301Z", "lastOk": true, "lastStatus": 401, "lastMs": 137, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 156, "p95ms24h": 182, "samples24h": 273, "samples30d": 1131, "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": 29, "ok": 29 } ] }, "vendorStatus": { "page": "https://status.twilio.com", "indicator": "minor", "summary": "Partially Degraded Service", "checkedAt": "2026-10-05T02:29:12.739025792Z" }, "versions": [ { "registry": "github", "name": "sendgrid/sendgrid-nodejs", "version": "8.1.6", "released": "2025-09-19", "seenAt": "2026-10-04T16:39:35.712620781Z" }, { "registry": "npm", "name": "@sendgrid/mail", "version": "8.1.6", "seenAt": "2026-10-04T16:39:34.797176919Z" }, { "registry": "pypi", "name": "sendgrid", "version": "6.12.5", "released": "2025-09-19", "seenAt": "2026-10-04T16:39:35.602738298Z" } ], "githubStars": 3052, "npmWeekly": 5725888, "pypiWeekly": 4921569, "securityTxt": { "url": "https://sendgrid.com/.well-known/security.txt", "state": "unknown", "checkedAt": "2026-10-04T15:15:48.071033664Z" }, "llmsTxt": { "url": "https://www.twilio.com/docs/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-04T15:18:13.607546517Z" }, "domain": { "domain": "sendgrid.com", "registered": "2009-04-20", "source": "https://rdap.verisign.com/com/v1/domain/sendgrid.com", "checkedAt": "2026-10-04T13:05:08.539043451Z" }, "pages": [ { "url": "https://www.twilio.com/en-us/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-10-04T15:52:31.997070508Z", "changedAt": "2026-10-03T15:40:22.694527148Z", "fingerprint": "a9fbb7f7cfed" }, { "url": "https://www.twilio.com/en-us/products/email-api/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-04T15:52:38.631131983Z", "changedAt": "2026-10-03T15:40:29.339427666Z", "fingerprint": "d7367bb506a5" }, { "url": "https://www.twilio.com/en-us/legal/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-04T15:52:34.551038823Z", "changedAt": "2026-10-03T15:40:25.166275433Z", "fingerprint": "a5ff48b4c6bb" }, { "url": "https://www.twilio.com/en-us/legal/tos", "kind": "terms", "status": 200, "checkedAt": "2026-10-04T15:52:36.555058934Z", "changedAt": "2026-10-03T15:40:27.263475456Z", "fingerprint": "2a9a14fa11bf" } ], "updatedAt": "2026-10-05T02:30:02.425806301Z" } }, "summary": "Twilio SendGrid has a score of 63.6 (B) against Mailjet API + MCP's 59.5 (C). Both do email send. The largest gap is maintenance \u0026 community, 32 points." }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/mailjet-vs-sendgrid", "json": "https://www.anchorterminal.com/compare/mailjet-vs-sendgrid.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/mailjet-vs-sendgrid.md", "slim": "https://www.anchorterminal.com/compare/mailjet-vs-sendgrid.min.md" }, "markdown": "Twilio SendGrid has a score of 63.6 (B) against Mailjet API + MCP's 59.5 (C). Both do email send. The largest gap is maintenance \u0026 community, 32 points.\n\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- Twilio SendGrid: grade B, 63.6/100, rank #202 of 452. Markdown https://www.anchorterminal.com/tools/sendgrid.md · JSON https://www.anchorterminal.com/api/v1/tools/sendgrid.json\n\n## Which one, for what\n\nPick Mailjet API + MCP for maintenance \u0026 community (+32).\n\nPick Twilio SendGrid for agent ergonomics (+7), security \u0026 auth (+29), transparency \u0026 trust (+6).\n\n## Score by category\n\n| Category | Weight | Mailjet API + MCP | Twilio SendGrid | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 62 | 66 | Twilio SendGrid +4 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 76 | 72 | Mailjet API + MCP +4 |\n| Agent ergonomics | 13% (16.2 this run) | 53 | 60 | Twilio SendGrid +7 |\n| Security \u0026 auth | 14% (17.5 this run) | 52 | 81 | Twilio SendGrid +29 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 30 | even |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 79 | 47 | Mailjet API + MCP +32 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 73 | 79 | Twilio SendGrid +6 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **59.5 · C** | **63.6 · B** | |\n\n## Facts side by side\n\n| Fact | Mailjet API + MCP | Twilio SendGrid |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Mailjet (Sinch) | Twilio |\n| Hosted endpoint | `https://api.mailjet.com/v3.1` | `https://api.sendgrid.com/v3` |\n| Transports | HTTP, stdio | HTTP |\n| Auth | API key | API key |\n| Pricing | Freemium | Paid |\n| x402 | no | no |\n| Licence | MIT | MIT |\n| Tools exposed | 117 | none |\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 | no | no |\n| llms.txt | yes | yes |\n| MCP registry | not listed | not listed |\n| Last release | 2026-09-14 | 2025-09-19 |\n| Popularity | 255 stars, 177k npm/wk, 245k PyPI/wk | 3.1k stars, 5.5M npm/wk, 4.6M PyPI/wk |\n| Agent reviews | 2.5/5 (2) | 2.5/5 (2) |\n\n## Verdicts\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**Twilio SendGrid.** Restricted API keys with per-endpoint scopes, subuser keys and IP access management. No official MCP server that can send, only Twilio's docs search.\n\n## Before you call either\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### Twilio SendGrid\n\n1. Give an agent that only sends a restricted key with just `mail.send`\n2. Set `mail_settings.sandbox_mode` to validate payloads without delivery\n3. Authenticate a domain or verify a single sender before the first send\n4. Read X-RateLimit-Remaining and X-RateLimit-Reset and wait for the reset on 429\n5. Don't blindly retry a timed-out mail/send. There's no idempotency key, so the message can go out twice\n\n## Other comparisons with Mailjet API + MCP or Twilio SendGrid\n\n- [Amazon SES vs Mailjet API + MCP](https://www.anchorterminal.com/compare/amazon-ses-vs-mailjet.md)\n- [Amazon SES vs Twilio SendGrid](https://www.anchorterminal.com/compare/amazon-ses-vs-sendgrid.md)\n- [Brevo API + MCP vs Mailjet API + MCP](https://www.anchorterminal.com/compare/brevo-vs-mailjet.md)\n- [Brevo API + MCP vs Twilio SendGrid](https://www.anchorterminal.com/compare/brevo-vs-sendgrid.md)\n- [Loops API + MCP vs Mailjet API + MCP](https://www.anchorterminal.com/compare/loops-vs-mailjet.md)\n- [Loops API + MCP vs Twilio SendGrid](https://www.anchorterminal.com/compare/loops-vs-sendgrid.md)\n- [Mailgun API + MCP vs Mailjet API + MCP](https://www.anchorterminal.com/compare/mailgun-vs-mailjet.md)\n- [Mailgun API + MCP vs Twilio SendGrid](https://www.anchorterminal.com/compare/mailgun-vs-sendgrid.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 SMTP2GO API + MCP](https://www.anchorterminal.com/compare/mailjet-vs-smtp2go.md)\n- [Postmark API + MCP vs Twilio SendGrid](https://www.anchorterminal.com/compare/postmark-vs-sendgrid.md)\n- [Resend API + MCP vs Twilio SendGrid](https://www.anchorterminal.com/compare/resend-vs-sendgrid.md)\n- [Twilio SendGrid vs SMTP2GO API + MCP](https://www.anchorterminal.com/compare/sendgrid-vs-smtp2go.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-05", "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": "Mailjet API + MCP vs Twilio SendGrid", "url": "" } ], "description": "Twilio SendGrid has a score of 63.6 (B) against Mailjet API + MCP's 59.5 (C). Both do email send. The largest gap is maintenance \u0026 community, 32 points. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Mailjet API + MCP C 59.5", "Twilio SendGrid B 63.6", "scores" ], "h1": "Mailjet API + MCP vs Twilio SendGrid", "image": "https://www.anchorterminal.com/assets/og/compare-mailjet-vs-sendgrid.png", "path": "/compare/mailjet-vs-sendgrid", "published": "2026-10-01", "section": "tools", "title": "Mailjet API + MCP vs Twilio SendGrid for AI agents, C 59.5 vs B 63.6", "toc": null, "updated": "2026-10-05", "url": "https://www.anchorterminal.com/compare/mailjet-vs-sendgrid" }, "tokens": { "markdown": 1450, "slim": 330 }, "version": 1 }