{ "data": { "a": { "slug": "cloudflare-email-service", "name": "Cloudflare Email Service", "vendor": "Cloudflare", "vendorUrl": "https://developers.cloudflare.com/email-service/", "kind": "http-api", "category": "email", "summary": "Cloudflare Email Service sends transactional email through a REST API, a Workers binding or SMTP, and routes inbound mail to Workers or verified addresses. Email Sending is in public beta and needs the Workers Paid plan for arbitrary recipients.", "url": "https://www.anchorterminal.com/tools/cloudflare-email-service", "markdownUrl": "https://www.anchorterminal.com/tools/cloudflare-email-service.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/cloudflare-email-service.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/cloudflare-email-service.json", "license": "Proprietary service under Cloudflare's Self-Serve Subscription Agreement and Developer Platform service-specific terms. The official `cloudflare` SDK on npm is Apache-2.0", "transports": [ "http" ], "remoteUrl": "https://api.cloudflare.com/client/v4", "packages": [ { "registry": "npm", "name": "cloudflare" }, { "registry": "pypi", "name": "cloudflare" } ], "auth": "api-key", "authNotes": "A Cloudflare API token as a Bearer header, created by the account owner in the dashboard. The SMTP guide names the permission Email Sending: Edit, and the OpenAPI file lists `com.cloudflare.api.account.email.sending.create` for sends and `.read` for limits and reputation. Tokens can carry an expiry and an IP address filter. The same token is the SMTP password. The OpenAPI file also accepts the legacy global API key. Access is self-serve, but the sending domain must be on Cloudflare DNS and new accounts start with a daily quota that Cloudflare raises over time.", "pricing": "usage", "pricingNotes": "$0.35 per 1,000 outbound emails after 3,000 included a month, on the Workers Paid plan (minimum $5 a month). Sending to arbitrary recipients is not available on Workers Free. Sends to the account's own verified destination addresses are free on every plan, and inbound Email Routing is free and unmetered. Hard bounces count towards the quota. Sends rejected at the API boundary or by the suppression list don't (https://developers.cloudflare.com/email-service/platform/pricing/).", "priceSummary": "$5 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the Email Service docs, the pricing page or the Email Sending paths of the OpenAPI file (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": 3766696, "pypiWeekly": 363923, "asOf": "2026-10-08" }, "docsUrl": "https://developers.cloudflare.com/email-service/", "llmsTxt": "https://developers.cloudflare.com/email-service/llms.txt", "openapi": "https://raw.githubusercontent.com/cloudflare/api-schemas/main/openapi.json", "capabilities": [ "email.send", "email.inbound", "email.domains", "email.analytics" ], "tags": [ "hosted", "usage", "beta", "openapi", "llms-txt", "smtp", "typescript", "python", "go", "graphql", "status-page", "bug-bounty" ], "lastRelease": "2026-09-25", "graded": true, "anchor": { "graded": true, "score": 67.3, "grade": "B", "agentReady": false, "rank": 212, "ranked": true, "rankOf": 722, "categoryRank": 4, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 72, "maintenance": 81, "payments": 30, "reliability": 51, "schema": 89, "security": 77, "transparency": 76 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "Cloudflare API tokens can be limited to sending, given an expiry and restricted by IP address, and a public OpenAPI file covers 29 Email Sending operations. Sending is still in beta, with no SLA, no idempotency key and no published daily quota, and it needs a domain on Cloudflare DNS and the Workers Paid plan.", "bestFor": "Teams already on Cloudflare DNS and Workers that want transactional sending and inbound handling in one account at a low unit price.", "strengths": [ "Public OpenAPI 3.0.3 file with 29 Email Sending and 46 Email Routing operations, plus llms.txt and a Markdown copy of every docs page", "$0.35 per 1,000 emails after 3,000 included a month on Workers Paid. Sends rejected at the API boundary or blocked by the suppression list don't count", "API tokens carry separate send and read permissions, an optional expiry and an IP address filter, and Workers bindings can be limited to named senders and recipients", "The Cloudflare API returns 429 with `retry-after` and `Ratelimit` headers, and the send endpoint has its own throttled error code 10004", "Email Sending and Email Routing are separate components on cloudflarestatus.com, and the changelog has four dated entries since 15 July 2026" ], "weaknesses": [ "Email Sending has been in public beta since 16 April 2026. Cloudflare's terms let it remove a beta service at any time, and no SLA was found", "No idempotency key on `/email/sending/send`, in the docs or the OpenAPI file", "The daily sending quota for new accounts is described as conservative with no number. It can be read per account from `/email/sending/limits`", "The sending domain must use Cloudflare DNS, and sending to arbitrary recipients needs the Workers Paid plan at $5 a month", "A token with the send permission can send from every onboarded domain on the account. No per-domain token scope was found", "No template storage, and the terms and FAQ allow transactional email only" ], "agentNotes": [ "POST to `https://api.cloudflare.com/client/v4/accounts/{account_id}/email/sending/send` with `Authorization: Bearer \u003ctoken\u003e`. The body needs `to`, `from`, `subject` and one of `html` or `text`", "Don't retry a timed-out send blindly. There is no idempotency key, so look for the message in the `emailSendingAdaptive` GraphQL dataset first", "On 429 (code 10004) wait for the `retry-after` header. On 409 `sending_not_ready` the domain setup is unfinished and nothing was sent", "Read `result.delivered`, `result.queued` and `result.permanent_bounces` in the response. A 200 does not mean every recipient was accepted", "Keep to 50 recipients across to, cc and bcc, and 5 MiB per message including attachments", "For SMTP use `smtp.mx.cloudflare.net` on port 465 with implicit TLS, username `api_token` and the API token as password. Port 587 is not supported", "By default one suppressed recipient fails the whole send. Turn on Drop suppressed recipients for the domain to send to the rest" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 67.3 } ], "editorialScores": { "ergonomics": 72, "maintenance": 81, "payments": 30, "reliability": 51, "schema": 89, "security": 77, "transparency": 57 }, "provenanceScore": 95 }, "connect": { "http": "curl \"https://api.cloudflare.com/client/v4/accounts/{account_id}/email/sending/send\" \\\n --header \"Authorization: Bearer \u003cAPI_TOKEN\u003e\" \\\n --header \"Content-Type: application/json\" \\\n --data '{\"to\":\"recipient@example.com\",\"from\":\"welcome@yourdomain.com\",\"subject\":\"Welcome to our service!\",\"html\":\"\u003ch1\u003eWelcome!\u003c/h1\u003e\u003cp\u003eThanks for signing up.\u003c/p\u003e\",\"text\":\"Welcome! Thanks for signing up.\"}'" }, "letme": { "capability": "https://letme.dev/email.send", "tool": "https://letme.dev/cloudflare-email-service" }, "sameCompany": [ "cloudflare-sandbox-sdk", "cloudflare-web-search", "cloudflare-mcp", "cloudflare-r2", "cloudflare-clef" ], "area": "communication", "unitPrices": [ { "item": "Outbound email", "unit": "1k-emails", "usd": 0.35, "note": "After 3,000 included a month, Workers Paid plan only. Sends to verified destination addresses are free" }, { "item": "Workers Paid plan", "unit": "month", "usd": 5, "note": "Minimum monthly charge for the plan that Email Sending to arbitrary recipients needs" } ], "provenance": { "legalEntity": "Cloudflare, Inc.", "domain": "cloudflare.com", "domainRegistered": "2009-02-17", "endpointOnVendorDomain": true, "terms": "https://www.cloudflare.com/terms/", "privacy": "https://www.cloudflare.com/privacypolicy/", "statusPage": "https://www.cloudflarestatus.com", "changelog": "https://developers.cloudflare.com/changelog/product/email-service/", "securityTxt": "valid", "checked": "2026-10-08", "notes": [ "Terms are the Self-Serve Subscription Agreement, last updated 12 September 2025, which names Cloudflare, Inc. at 101 Townsend St, San Francisco. Its section 5 covers beta services.", "The Developer Platform service-specific terms (https://www.cloudflare.com/service-specific-terms-developer-platform/), last updated 28 September 2026, have their own sections for Cloudflare Email Service and Email Routing and supplement the agreement.", "The privacy policy is effective from 4 November 2025 and makes Cloudflare a data processor for customer content that crosses its network. A customer DPA is at https://www.cloudflare.com/cloudflare-customer-dpa/.", "www.cloudflare.com/.well-known/security.txt, read on 8 October 2026, names HackerOne and a disclosure policy and has no Expires field. It is recorded as valid to match the other Cloudflare listings.", "The REST endpoint is on api.cloudflare.com. The SMTP endpoint is on smtp.mx.cloudflare.net, a different registered domain.", "The status page lists Email Sending and Email Routing as separate components, both operational on 8 October 2026.", "RDAP for cloudflare.com gives a registration date of 2009-02-17." ], "score": 95 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/cloudflare-email-service.json", "live": { "slug": "cloudflare-email-service", "probe": { "target": "https://api.cloudflare.com/client/v4", "method": "get", "lastAt": "2026-10-08T21:12:07.608903417Z", "lastOk": true, "lastStatus": 404, "lastMs": 38, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 38, "p95ms24h": 97, "samples24h": 21, "samples30d": 21, "days": [ { "date": "2026-10-08", "probes": 21, "ok": 21 } ] }, "vendorStatus": { "page": "https://www.cloudflarestatus.com", "indicator": "major", "summary": "Partial System Outage", "checkedAt": "2026-10-08T21:05:54.426735933Z" }, "updatedAt": "2026-10-08T21:12:07.608903417Z" } }, "answer": "Cloudflare Email Service and Mailtrap Email API + MCP score within a point of each other on agent readiness, 67.3 (B) and 66.8 (B). Mailtrap Email API + MCP leads on reliability, payments \u0026 pricing and maintenance \u0026 community.", "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": "2026-10-08T21:12:14.760803465Z", "lastOk": true, "lastStatus": 404, "lastMs": 480, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 409, "p95ms24h": 468, "samples24h": 41, "samples30d": 41, "days": [ { "date": "2026-10-08", "probes": 41, "ok": 41 } ] }, "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": "2026-10-08T21:12:14.760803465Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Cloudflare", "b": "Mailtrap (Railsware)", "name": "Vendor" }, { "a": "https://api.cloudflare.com/client/v4", "b": "https://send.api.mailtrap.io", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP, stdio", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Pay per use", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under Cloudflare's Self-Serve Subscription Agreement and Developer Platform service-specific terms. The official `cloudflare` SDK on npm is Apache-2.0", "b": "Proprietary service under Mailtrap's terms of service. The MCP server, the Node.js SDK and the CLI are MIT", "name": "Licence" }, { "a": "none", "b": "125", "name": "Tools exposed" }, { "a": "no", "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": "2026-09-25", "b": "2026-10-08", "name": "Last release" }, { "a": "2025-09-12", "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": "yes", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "yes", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "3.8M npm/wk, 364k PyPI/wk", "b": "65 stars, 66k npm/wk, 21k PyPI/wk", "name": "Popularity" } ], "faq": [ { "answer": "Cloudflare Email Service and Mailtrap Email API + MCP score within a point of each other on agent readiness, 67.3 (B) and 66.8 (B). Mailtrap Email API + MCP leads on reliability, payments \u0026 pricing and maintenance \u0026 community.", "question": "Which is better for AI agents, Cloudflare Email Service or Mailtrap Email API + MCP?" }, { "answer": "Both need an API key.", "question": "Do Cloudflare Email Service and Mailtrap Email API + MCP need an API key?" }, { "answer": "Yes. Cloudflare Email Service has a hosted endpoint at https://api.cloudflare.com/client/v4 and Mailtrap Email API + MCP at https://send.api.mailtrap.io.", "question": "Can an agent call Cloudflare Email Service and Mailtrap Email API + MCP without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Schema \u0026 documentation, 89 against 82", "Agent ergonomics, 72 against 62", "Security \u0026 auth, 77 against 60" ], "also": null, "goodFor": "Teams already on Cloudflare DNS and Workers that want transactional sending and inbound handling in one account at a low unit price.", "slug": "cloudflare-email-service", "watchFor": "Email Sending has been in public beta since 16 April 2026. Cloudflare's terms let it remove a beta service at any time, and no SLA was found" }, { "aheadOn": [ "Reliability, 65 against 51", "Payments \u0026 pricing, 40 against 30", "Maintenance \u0026 community, 93 against 81" ], "also": [ "Runs on your own machine", "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-cloudflare-email-service.json", "title": "Amazon SES vs Cloudflare Email Service", "url": "https://www.anchorterminal.com/compare/amazon-ses-vs-cloudflare-email-service" }, { "json": "https://www.anchorterminal.com/compare/amazon-ses-vs-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-cloudflare-email-service.json", "title": "Brevo API + MCP vs Cloudflare Email Service", "url": "https://www.anchorterminal.com/compare/brevo-vs-cloudflare-email-service" }, { "json": "https://www.anchorterminal.com/compare/brevo-vs-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-loops.json", "title": "Cloudflare Email Service vs Loops API + MCP", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-loops" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailersend.json", "title": "Cloudflare Email Service vs MailerSend", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailersend" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailgun.json", "title": "Cloudflare Email Service vs Mailgun API + MCP", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailgun" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailjet.json", "title": "Cloudflare Email Service vs Mailjet API + MCP", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailjet" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mandrill.json", "title": "Cloudflare Email Service vs Mailchimp Transactional (Mandrill)", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mandrill" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-postmark.json", "title": "Cloudflare Email Service vs Postmark API + MCP", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-postmark" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-resend.json", "title": "Cloudflare Email Service vs Resend API + MCP", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-resend" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-sendgrid.json", "title": "Cloudflare Email Service vs Twilio SendGrid", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-sendgrid" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-smtp2go.json", "title": "Cloudflare Email Service vs SMTP2GO API + MCP", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-smtp2go" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-zoho-zeptomail.json", "title": "Cloudflare Email Service vs Zoho CPaaS (formerly ZeptoMail)", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-zoho-zeptomail" }, { "json": "https://www.anchorterminal.com/compare/loops-vs-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-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-mailtrap.json", "title": "Mailgun API + MCP vs Mailtrap Email API + MCP", "url": "https://www.anchorterminal.com/compare/mailgun-vs-mailtrap" }, { "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": 14, "cloudflare-email-service": 51, "edge": "mailtrap", "key": "reliability", "mailtrap": 65, "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 7, "cloudflare-email-service": 89, "edge": "cloudflare-email-service", "key": "schema", "mailtrap": 82, "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 10, "cloudflare-email-service": 72, "edge": "cloudflare-email-service", "key": "ergonomics", "mailtrap": 62, "name": "Agent ergonomics", "weight": 13 }, { "by": 17, "cloudflare-email-service": 77, "edge": "cloudflare-email-service", "key": "security", "mailtrap": 60, "name": "Security \u0026 auth", "weight": 14 }, { "by": 10, "cloudflare-email-service": 30, "edge": "mailtrap", "key": "payments", "mailtrap": 40, "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 12, "cloudflare-email-service": 81, "edge": "mailtrap", "key": "maintenance", "mailtrap": 93, "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 1, "cloudflare-email-service": 76, "edge": "mailtrap", "key": "transparency", "mailtrap": 77, "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Cloudflare Email Service and Mailtrap Email API + MCP score within a point of each other on agent readiness, 67.3 (B) and 66.8 (B). Mailtrap Email API + MCP leads on reliability, payments \u0026 pricing and maintenance \u0026 community. Both do email send.", "verdicts": { "cloudflare-email-service": "Cloudflare API tokens can be limited to sending, given an expiry and restricted by IP address, and a public OpenAPI file covers 29 Email Sending operations. Sending is still in beta, with no SLA, no idempotency key and no published daily quota, and it needs a domain on Cloudflare DNS and the Workers Paid plan.", "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/cloudflare-email-service-vs-mailtrap", "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailtrap.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailtrap.md", "slim": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailtrap.min.md" }, "markdown": "Cloudflare Email Service and Mailtrap Email API + MCP score within a point of each other on agent readiness, 67.3 (B) and 66.8 (B). Mailtrap Email API + MCP leads on reliability, payments \u0026 pricing and maintenance \u0026 community. Both do email send.\n\n- Cloudflare Email Service: grade B, 67.3/100, rank #212 of 722. Markdown https://www.anchorterminal.com/tools/cloudflare-email-service.md · JSON https://www.anchorterminal.com/api/v1/tools/cloudflare-email-service.json\n- 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### Cloudflare Email Service (B)\n\nGood for: Teams already on Cloudflare DNS and Workers that want transactional sending and inbound handling in one account at a low unit price.\n\nAhead on:\n- Schema \u0026 documentation, 89 against 82\n- Agent ergonomics, 72 against 62\n- Security \u0026 auth, 77 against 60\n\nWatch for: Email Sending has been in public beta since 16 April 2026. Cloudflare's terms let it remove a beta service at any time, and no SLA was found\n\n### 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 51\n- Payments \u0026 pricing, 40 against 30\n- Maintenance \u0026 community, 93 against 81\n\nAlso in its favour:\n- Runs on your own machine\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 | Cloudflare Email Service | Mailtrap Email API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 51 | 65 | Mailtrap Email API + MCP +14 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 89 | 82 | Cloudflare Email Service +7 |\n| Agent ergonomics | 13% (16.2 this run) | 72 | 62 | Cloudflare Email Service +10 |\n| Security \u0026 auth | 14% (17.5 this run) | 77 | 60 | Cloudflare Email Service +17 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 40 | Mailtrap Email API + MCP +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 81 | 93 | Mailtrap Email API + MCP +12 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 76 | 77 | Mailtrap Email API + MCP +1 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **67.3 · B** | **66.8 · B** | |\n\n## Facts side by side\n\n| Fact | Cloudflare Email Service | Mailtrap Email API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Cloudflare | Mailtrap (Railsware) |\n| Hosted endpoint | `https://api.cloudflare.com/client/v4` | `https://send.api.mailtrap.io` |\n| Transports | HTTP | HTTP, stdio |\n| Auth | API key | API key |\n| Pricing | Pay per use | Freemium |\n| x402 | no | no |\n| Licence | Proprietary service under Cloudflare's Self-Serve Subscription Agreement and Developer Platform service-specific terms. The official `cloudflare` SDK on npm is Apache-2.0 | Proprietary service under Mailtrap's terms of service. The MCP server, the Node.js SDK and the CLI are MIT |\n| Tools exposed | none | 125 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| MCP registry | not listed | `io.mailtrap/mcp` |\n| Last release | 2026-09-25 | 2026-10-08 |\n| Terms last updated | 2025-09-12 | 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 | yes | not found in the text |\n| Terms restrict benchmarking | not found in the text | not found in the text |\n| Terms or service can change without notice | yes | yes |\n| Arbitration or class-action waiver | yes | yes |\n| Popularity | 3.8M npm/wk, 364k PyPI/wk | 65 stars, 66k npm/wk, 21k PyPI/wk |\n\n## Verdicts\n\n**Cloudflare Email Service.** Cloudflare API tokens can be limited to sending, given an expiry and restricted by IP address, and a public OpenAPI file covers 29 Email Sending operations. Sending is still in beta, with no SLA, no idempotency key and no published daily quota, and it needs a domain on Cloudflare DNS and the Workers Paid plan.\n\n**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### Cloudflare Email Service\n\n1. POST to `https://api.cloudflare.com/client/v4/accounts/{account_id}/email/sending/send` with `Authorization: Bearer \u003ctoken\u003e`. The body needs `to`, `from`, `subject` and one of `html` or `text`\n2. Don't retry a timed-out send blindly. There is no idempotency key, so look for the message in the `emailSendingAdaptive` GraphQL dataset first\n3. On 429 (code 10004) wait for the `retry-after` header. On 409 `sending_not_ready` the domain setup is unfinished and nothing was sent\n4. Read `result.delivered`, `result.queued` and `result.permanent_bounces` in the response. A 200 does not mean every recipient was accepted\n5. Keep to 50 recipients across to, cc and bcc, and 5 MiB per message including attachments\n6. For SMTP use `smtp.mx.cloudflare.net` on port 465 with implicit TLS, username `api_token` and the API token as password. Port 587 is not supported\n7. By default one suppressed recipient fails the whole send. Turn on Drop suppressed recipients for the domain to send to the rest\n\n### 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, Cloudflare Email Service or Mailtrap Email API + MCP?\n\nCloudflare Email Service and Mailtrap Email API + MCP score within a point of each other on agent readiness, 67.3 (B) and 66.8 (B). Mailtrap Email API + MCP leads on reliability, payments \u0026 pricing and maintenance \u0026 community.\n\n### Do Cloudflare Email Service and Mailtrap Email API + MCP need an API key?\n\nBoth need an API key.\n\n### Can an agent call Cloudflare Email Service and Mailtrap Email API + MCP without installing anything?\n\nYes. Cloudflare Email Service has a hosted endpoint at https://api.cloudflare.com/client/v4 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/cloudflare-email-service-vs-mailtrap.json, and with the fewest tokens: https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailtrap.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"cloudflare-email-service\", \"b\": \"mailtrap\"}`. From a terminal: `anchor compare cloudflare-email-service mailtrap`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/cloudflare-email-service.json and https://www.anchorterminal.com/api/v1/tools/mailtrap.json\n\n## Other comparisons with Cloudflare Email Service or Mailtrap Email API + MCP\n\n- [Amazon SES vs Cloudflare Email Service](https://www.anchorterminal.com/compare/amazon-ses-vs-cloudflare-email-service.md)\n- [Amazon SES vs Mailtrap Email API + MCP](https://www.anchorterminal.com/compare/amazon-ses-vs-mailtrap.md)\n- [Brevo API + MCP vs Cloudflare Email Service](https://www.anchorterminal.com/compare/brevo-vs-cloudflare-email-service.md)\n- [Brevo API + MCP vs Mailtrap Email API + MCP](https://www.anchorterminal.com/compare/brevo-vs-mailtrap.md)\n- [Cloudflare Email Service vs Loops API + MCP](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-loops.md)\n- [Cloudflare Email Service vs MailerSend](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailersend.md)\n- [Cloudflare Email Service vs Mailgun API + MCP](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailgun.md)\n- [Cloudflare Email Service vs Mailjet API + MCP](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailjet.md)\n- [Cloudflare Email Service vs Mailchimp Transactional (Mandrill)](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mandrill.md)\n- [Cloudflare Email Service vs Postmark API + MCP](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-postmark.md)\n- [Cloudflare Email Service vs Resend API + MCP](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-resend.md)\n- [Cloudflare Email Service vs Twilio SendGrid](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-sendgrid.md)\n- [Cloudflare Email Service vs SMTP2GO API + MCP](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-smtp2go.md)\n- [Cloudflare Email Service vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-zoho-zeptomail.md)\n- [Loops API + MCP vs Mailtrap Email API + MCP](https://www.anchorterminal.com/compare/loops-vs-mailtrap.md)\n- [MailerSend vs Mailtrap Email API + MCP](https://www.anchorterminal.com/compare/mailersend-vs-mailtrap.md)\n- [Mailgun API + MCP vs Mailtrap Email API + MCP](https://www.anchorterminal.com/compare/mailgun-vs-mailtrap.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": "Cloudflare Email Service vs Mailtrap Email API + MCP", "url": "" } ], "description": "Cloudflare Email Service and Mailtrap Email API + MCP score within a point of each other on agent readiness, 67.3 (B) and 66.8 (B). Mailtrap Email API + MCP leads on reliability, payments \u0026 pricing and maintenance \u0026 community. Both do email send. Category scores, facts, verdicts…", "facts": [ "Cloudflare Email Service B 67.3", "Mailtrap Email API + MCP B 66.8", "scores" ], "h1": "Cloudflare Email Service vs Mailtrap Email API + MCP", "image": "https://www.anchorterminal.com/assets/og/compare-cloudflare-email-service-vs-mailtrap.png", "path": "/compare/cloudflare-email-service-vs-mailtrap", "published": "2026-10-01", "section": "tools", "title": "Cloudflare Email Service vs Mailtrap Email API + MCP for AI agents", "toc": null, "updated": "2026-10-08", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-mailtrap" }, "tokens": { "markdown": 2850, "slim": 730 }, "version": 1 }