{
  "data": {
    "a": {
      "slug": "amazon-ses",
      "name": "Amazon SES",
      "vendor": "Amazon Web Services",
      "vendorUrl": "https://aws.amazon.com/ses/",
      "kind": "http-api",
      "category": "email",
      "summary": "AWS's email service for sending and receiving at scale, over the SES v2 API or SMTP, with templates, configuration sets, receipt rules and deliverability tooling.",
      "url": "https://www.anchorterminal.com/tools/amazon-ses",
      "markdownUrl": "https://www.anchorterminal.com/tools/amazon-ses.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/amazon-ses.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/amazon-ses.json",
      "repo": "https://github.com/aws/aws-sdk-js-v3",
      "license": "Apache-2.0",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://email.us-east-1.amazonaws.com/v2",
      "packages": [
        {
          "registry": "npm",
          "name": "@aws-sdk/client-sesv2"
        },
        {
          "registry": "pypi",
          "name": "boto3"
        }
      ],
      "auth": "mixed",
      "authNotes": "API calls are signed with AWS Signature Version 4 using IAM credentials. SMTP uses separate SMTP credentials derived from an IAM user. The AWS MCP Server can reach SES with IAM SigV4 or OAuth sign-in.",
      "pricing": "usage",
      "pricingNotes": "A la carte $0.10 per 1,000 emails sent or received, plus $0.12 a GB of attachments and $0.09 per 1,000 inbound chunks. Pricing plans since 2026 are Essentials $0.16 per 1,000 with no monthly fee, Pro $105 a month plus $0.22 per 1,000, Enterprise $500 a month plus $0.23 per 1,000, all falling with volume. Accounts with no SES use since 2025-06-01 start on Essentials from 2026-07-21. Standard dedicated IPs $24.95 a month each. New AWS customers get up to $200 in Free Tier credits (https://aws.amazon.com/ses/pricing/).",
      "priceSummary": "$105 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402 or stablecoin payment path in docs or pricing (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 5083375,
        "pypiWeekly": null,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.aws.amazon.com/ses/latest/dg/Welcome.html",
      "llmsTxt": "https://docs.aws.amazon.com/ses/latest/dg/llms.txt",
      "capabilities": [
        "email.send",
        "email.inbound",
        "email.templates",
        "email.domains",
        "email.analytics"
      ],
      "tags": [
        "hosted",
        "card-required",
        "llms-txt",
        "typescript",
        "python",
        "enterprise"
      ],
      "lastRelease": "2026-09-29",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 75.1,
        "grade": "BB",
        "agentReady": true,
        "rank": 42,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 2,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 64,
          "maintenance": 85,
          "payments": 20,
          "reliability": 95,
          "schema": 85,
          "security": 87,
          "transparency": 77
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Sending starts at $0.10 per 1,000 emails on the a la carte plan. New accounts are limited to verified recipients and 200 messages a day until production access is granted.",
        "strengths": [
          "$0.10 per 1,000 emails a la carte, falling to $0.11 per 1,000 above 100 million on Essentials",
          "IAM policies can limit a credential to SendEmail from one identity, and CloudTrail logs every call",
          "Covered by an AWS SLA and in scope for SOC 1, 2 and 3",
          "Inbound mail through receipt rules to S3, SNS or Lambda",
          "Smithy model for SES v2 published and updated six times since July"
        ],
        "weaknesses": [
          "Sandbox limits new accounts to verified recipients and 200 messages a day until production access is granted",
          "SigV4 signing makes a plain curl or quick agent call awkward",
          "No SES-specific MCP server, and the AWS skill covers sending setup only",
          "No idempotency token on SendEmail, and over-quota messages are dropped",
          "security.txt on aws.amazon.com expired on 24 September 2026"
        ],
        "agentNotes": [
          "Call GetAccount and check ProductionAccessEnabled and the send quota before emailing arbitrary recipients",
          "Verify the From domain as an identity first. Sends from unverified identities fail even in production",
          "Use the mailbox simulator (success@simulator.amazonses.com) to test bounces and complaints without hurting reputation",
          "Use the same Region the identity was verified in, since quotas and sandbox status are per Region",
          "On a throttling error, wait and retry the send. SES drops messages over quota rather than queueing them"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 8,
        "avgRating": 3.3,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "BB",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 75.1
          }
        ],
        "editorialScores": {
          "ergonomics": 64,
          "maintenance": 85,
          "payments": 20,
          "reliability": 95,
          "schema": 85,
          "security": 87,
          "transparency": 59
        },
        "provenanceScore": 95
      },
      "connect": {
        "http": "curl -X POST https://email.us-east-1.amazonaws.com/v2/email/outbound-emails \\\n  --aws-sigv4 \"aws:amz:us-east-1:ses\" --user \"$AWS_ACCESS_KEY_ID:$AWS_SECRET_ACCESS_KEY\" \\\n  -H \"Content-Type: application/json\" -d '{\"FromEmailAddress\":\"you@example.com\",\"Destination\":{\"ToAddresses\":[\"them@example.com\"]},\"Content\":{\"Simple\":{\"Subject\":{\"Data\":\"Hello\"},\"Body\":{\"Text\":{\"Data\":\"Hello from SES\"}}}}}'"
      },
      "letme": {
        "capability": "https://letme.dev/email.send",
        "tool": "https://letme.dev/amazon-ses"
      },
      "sameCompany": [
        "amazon-bedrock-guardrails",
        "amazon-transcribe",
        "amazon-polly",
        "aws-secrets-manager",
        "aws-mcp-servers",
        "amazon-translate"
      ],
      "area": "communication",
      "unitPrices": [
        {
          "item": "Outbound, a la carte",
          "unit": "1k-emails",
          "usd": 0.1,
          "note": "plus $0.12 a GB of attachments"
        },
        {
          "item": "Inbound, a la carte",
          "unit": "1k-emails",
          "usd": 0.1,
          "note": "plus $0.09 per 1,000 incoming chunks"
        },
        {
          "item": "Essentials plan",
          "unit": "1k-emails",
          "usd": 0.16,
          "note": "0 to 10M, no monthly fee, default for new accounts from 2026-07-21"
        },
        {
          "item": "Pro plan",
          "unit": "month",
          "usd": 105,
          "note": "plus $0.22 per 1,000 emails, 1 managed dedicated IP included"
        },
        {
          "item": "Pro plan emails",
          "unit": "1k-emails",
          "usd": 0.22,
          "note": "0 to 10M"
        },
        {
          "item": "Enterprise plan",
          "unit": "month",
          "usd": 500,
          "note": "plus $0.23 per 1,000 emails"
        },
        {
          "item": "Dedicated IP, standard",
          "unit": "month",
          "usd": 24.95,
          "note": "per IP"
        }
      ],
      "provenance": {
        "legalEntity": "Amazon Web Services, Inc.",
        "domain": "amazonaws.com",
        "domainRegistered": "2005-08-18",
        "domainNote": "The API runs on Amazon's amazonaws.com service domain, while the product and legal pages sit on aws.amazon.com (amazon.com registered 1994-11-01).",
        "endpointOnVendorDomain": true,
        "terms": "https://aws.amazon.com/agreement/",
        "privacy": "https://aws.amazon.com/privacy/",
        "statusPage": "https://health.aws.amazon.com/health/status",
        "changelog": "https://docs.aws.amazon.com/ses/latest/dg/doc-history.html",
        "securityTxt": "expired",
        "checked": "2026-09-30",
        "notes": [
          "https://aws.amazon.com/.well-known/security.txt carries Expires 2026-09-24T16:25:03Z."
        ],
        "score": 95
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/amazon-ses.json",
      "live": {
        "slug": "amazon-ses",
        "probe": {
          "target": "https://email.us-east-1.amazonaws.com/v2",
          "method": "get",
          "lastAt": "2026-10-05T02:29:51.305072703Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 248,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 254,
          "p95ms24h": 306,
          "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
            }
          ]
        },
        "versions": [
          {
            "registry": "github",
            "name": "aws/aws-sdk-js-v3",
            "version": "v3.1146.0",
            "released": "2026-10-02",
            "seenAt": "2026-10-04T16:20:10.561211616Z"
          },
          {
            "registry": "npm",
            "name": "@aws-sdk/client-sesv2",
            "version": "3.1146.0",
            "seenAt": "2026-10-04T16:20:10.141551464Z"
          },
          {
            "registry": "pypi",
            "name": "boto3",
            "version": "1.43.108",
            "released": "2026-10-02",
            "seenAt": "2026-10-04T16:20:10.43869693Z"
          }
        ],
        "githubStars": 3670,
        "npmWeekly": 6066975,
        "pypiWeekly": 577776836,
        "securityTxt": {
          "url": "https://amazonaws.com/.well-known/security.txt",
          "state": "expired",
          "expires": "2026-09-24T16:25:03.000Z",
          "checkedAt": "2026-10-04T15:15:43.742236491Z"
        },
        "llmsTxt": {
          "url": "https://docs.aws.amazon.com/ses/latest/dg/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:17:16.88509244Z"
        },
        "domain": {
          "domain": "amazonaws.com",
          "registered": "2005-08-18",
          "source": "https://rdap.verisign.com/com/v1/domain/amazonaws.com",
          "checkedAt": "2026-10-04T13:04:05.080783455Z"
        },
        "pages": [
          {
            "url": "https://docs.aws.amazon.com/ses/latest/dg/doc-history.html",
            "kind": "changelog",
            "status": 304,
            "checkedAt": "2026-10-04T15:43:20.433991097Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "e3b0c44298fc"
          },
          {
            "url": "https://aws.amazon.com/ses/pricing/",
            "kind": "deprecations",
            "status": 304,
            "checkedAt": "2026-10-04T15:41:38.654021896Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "334cd8a23b47"
          },
          {
            "url": "https://aws.amazon.com/agreement/",
            "kind": "terms",
            "status": 304,
            "checkedAt": "2026-10-04T15:41:24.740166653Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "cc03daebf120"
          }
        ],
        "updatedAt": "2026-10-05T02:29:51.305072703Z"
      }
    },
    "b": {
      "slug": "postmark",
      "name": "Postmark API + MCP",
      "vendor": "Postmark (ActiveCampaign)",
      "vendorUrl": "https://postmarkapp.com",
      "kind": "http-api",
      "category": "email",
      "summary": "Transactional email API with separate broadcast streams, templates, inbound parsing and bounce handling.",
      "url": "https://www.anchorterminal.com/tools/postmark",
      "markdownUrl": "https://www.anchorterminal.com/tools/postmark.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/postmark.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/postmark.json",
      "repo": "https://github.com/ActiveCampaign/postmark-mcp",
      "license": "MIT",
      "transports": [
        "http",
        "stdio"
      ],
      "remoteUrl": "https://api.postmarkapp.com",
      "packages": [
        {
          "registry": "npm",
          "name": "postmark"
        },
        {
          "registry": "npm",
          "name": "@activecampaign/postmark-mcp"
        }
      ],
      "auth": "api-key",
      "authNotes": "Server API token in the `X-Postmark-Server-Token` header for sending and per-server calls, and a separate `X-Postmark-Account-Token` for account-level calls. The token `POSTMARK_API_TEST` accepts requests without sending. The MCP server reads the server token from `POSTMARK_SERVER_TOKEN`.",
      "pricing": "freemium",
      "pricingNotes": "Free Developer plan with 100 emails a month, no overages and no expiry. At 10,000 emails a month Basic is $15, Pro $16.50 and Platform $18, with overage $1.80, $1.30 and $1.20 per 1,000. Pro at 125,000 is $126.50 and at 1,500,000 is $852.50. Sent and received emails both count. Dedicated IPs $50 a month from 300,000 emails a month, DMARC monitoring $14 a month per domain (https://postmarkapp.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": 24,
      "popularity": {
        "githubStars": 57,
        "npmWeekly": 1281479,
        "pypiWeekly": null,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://postmarkapp.com/developer",
      "llmsTxt": "https://postmarkapp.com/llms.txt",
      "capabilities": [
        "email.send",
        "email.inbound",
        "email.templates",
        "email.domains",
        "email.analytics",
        "email.marketing"
      ],
      "tags": [
        "hosted",
        "freemium",
        "no-card",
        "mcp",
        "llms-txt",
        "typescript",
        "webhooks"
      ],
      "lastRelease": "2026-08-12",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 66.7,
        "grade": "B",
        "agentReady": false,
        "rank": 158,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 3,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 79,
          "maintenance": 65,
          "payments": 40,
          "reliability": 60,
          "schema": 81,
          "security": 63,
          "transparency": 80
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "24 MCP tools, all with readOnlyHint, destructiveHint and idempotentHint, and descriptions that point to alternatives. No OpenAPI spec and no published request-rate limit.",
        "strengths": [
          "24 MCP tools, all with readOnlyHint, destructiveHint and idempotentHint, and descriptions that point to alternatives",
          "Prompt-injection guidance and a webhook URL allowlist in the MCP README",
          "45-day retention by default, two named subprocessors and a DPA in the terms",
          "Per-1,000 overage rates published for every plan",
          "IP allowlisting for API sending since 27 August 2026"
        ],
        "weaknesses": [
          "No OpenAPI spec and no published request-rate limit",
          "Manual account approval before sending outside your own domains",
          "No SOC 2, ISO 27001, disclosure policy or security.txt found for Postmark itself",
          "Webhooks aren't HMAC-signed",
          "The MCP server runs locally only and its repository has no CI"
        ],
        "agentNotes": [
          "Install @activecampaign/postmark-mcp, never the unscoped postmark-mcp package",
          "Use the token `POSTMARK_API_TEST` to check a payload without sending",
          "Set `MessageStream` to `outbound` for transactional mail and a broadcast stream for bulk",
          "Set `WEBHOOK_URL_ALLOWLIST` so a misled createWebhook call can't send events to someone else's server",
          "Keep `count + offset` under 10,000 on message and bounce searches"
        ],
        "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": 66.7
          }
        ],
        "editorialScores": {
          "ergonomics": 79,
          "maintenance": 65,
          "payments": 40,
          "reliability": 60,
          "schema": 81,
          "security": 63,
          "transparency": 69
        },
        "provenanceScore": 90
      },
      "connect": {
        "http": "curl https://api.postmarkapp.com/email -H \"Accept: application/json\" \\\n  -H \"Content-Type: application/json\" -H \"X-Postmark-Server-Token: $POSTMARK_SERVER_TOKEN\" \\\n  -d '{\"From\":\"sender@example.com\",\"To\":\"receiver@example.com\",\"Subject\":\"Hello\",\"TextBody\":\"Hello\",\"MessageStream\":\"outbound\"}'",
        "config": {
          "mcpServers": {
            "postmark": {
              "args": [
                "-y",
                "@activecampaign/postmark-mcp"
              ],
              "command": "npx",
              "env": {
                "DEFAULT_MESSAGE_STREAM": "outbound",
                "DEFAULT_SENDER_EMAIL": "${DEFAULT_SENDER_EMAIL}",
                "POSTMARK_SERVER_TOKEN": "${POSTMARK_SERVER_TOKEN}"
              }
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/email.send",
        "tool": "https://letme.dev/postmark"
      },
      "area": "communication",
      "unitPrices": [
        {
          "item": "Basic 10k",
          "unit": "month",
          "usd": 15,
          "note": "10,000 emails"
        },
        {
          "item": "Pro 10k",
          "unit": "month",
          "usd": 16.5,
          "note": "10,000 emails"
        },
        {
          "item": "Platform 10k",
          "unit": "month",
          "usd": 18,
          "note": "10,000 emails"
        },
        {
          "item": "Pro 125k",
          "unit": "month",
          "usd": 126.5,
          "note": "125,000 emails"
        },
        {
          "item": "Overage on Basic",
          "unit": "1k-emails",
          "usd": 1.8
        },
        {
          "item": "Overage on Pro",
          "unit": "1k-emails",
          "usd": 1.3
        },
        {
          "item": "Overage on Platform",
          "unit": "1k-emails",
          "usd": 1.2
        },
        {
          "item": "Dedicated IP",
          "unit": "month",
          "usd": 50,
          "note": "per IP, from 300,000 emails a month"
        }
      ],
      "provenance": {
        "legalEntity": "AC PM, LLC",
        "domain": "postmarkapp.com",
        "domainRegistered": "2009-05-25",
        "endpointOnVendorDomain": true,
        "terms": "https://postmarkapp.com/terms-of-service",
        "privacy": "https://www.activecampaign.com/legal/privacy-policy",
        "statusPage": "https://status.postmarkapp.com",
        "changelog": "https://postmarkapp.com/updates",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "AC PM, LLC is ActiveCampaign's Postmark entity. postmarkapp.com/privacy-policy redirects to ActiveCampaign's privacy policy."
        ],
        "score": 90
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/postmark.json",
      "live": {
        "slug": "postmark",
        "probe": {
          "target": "https://api.postmarkapp.com",
          "method": "get",
          "lastAt": "2026-10-05T02:30:00.945273741Z",
          "lastOk": true,
          "lastStatus": 200,
          "lastMs": 1138,
          "authRequired": false,
          "uptime24h": 97.44,
          "uptime30d": 99.38,
          "p50ms24h": 607,
          "p95ms24h": 4373,
          "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": 265
            },
            {
              "date": "2026-10-05",
              "probes": 29,
              "ok": 29
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.postmarkapp.com",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-04T21:40:24.509628112Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "ActiveCampaign/postmark-mcp",
            "version": "v2.1.1",
            "released": "2026-07-13",
            "seenAt": "2026-10-04T16:37:29.067665935Z"
          },
          {
            "registry": "npm",
            "name": "@activecampaign/postmark-mcp",
            "version": "2.1.1",
            "seenAt": "2026-10-04T16:37:27.105943117Z"
          },
          {
            "registry": "npm",
            "name": "postmark",
            "version": "5.1.0",
            "seenAt": "2026-10-04T16:37:26.847244966Z"
          }
        ],
        "githubStars": 57,
        "npmWeekly": 1390363,
        "securityTxt": {
          "url": "https://postmarkapp.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:57.369008774Z"
        },
        "llmsTxt": {
          "url": "https://postmarkapp.com/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:18:08.635997833Z"
        },
        "domain": {
          "domain": "postmarkapp.com",
          "registered": "2009-05-25",
          "source": "https://rdap.verisign.com/com/v1/domain/postmarkapp.com",
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            "changedAt": "0001-01-01T00:00:00Z",
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            "kind": "privacy",
            "status": 304,
            "checkedAt": "2026-10-04T15:48:56.508023604Z",
            "changedAt": "2026-10-02T15:25:06.170575042Z",
            "fingerprint": "3ba14f859de2"
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  "markdown": "Amazon SES has a score of 75.1 (BB) against Postmark API + MCP's 66.7 (B). Both do email send. The largest gap is reliability, 35 points.\n\n- Amazon SES: grade BB, 75.1/100, rank #42 of 452. Markdown https://www.anchorterminal.com/tools/amazon-ses.md · JSON https://www.anchorterminal.com/api/v1/tools/amazon-ses.json\n- Postmark API + MCP: grade B, 66.7/100, rank #158 of 452. Markdown https://www.anchorterminal.com/tools/postmark.md · JSON https://www.anchorterminal.com/api/v1/tools/postmark.json\n\n## Which one, for what\n\nPick Amazon SES for reliability (+35), security \u0026 auth (+24), maintenance \u0026 community (+20).\n\nPick Postmark API + MCP for agent ergonomics (+15), payments \u0026 pricing (+20).\n\n## Score by category\n\n| Category | Weight | Amazon SES | Postmark API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 95 | 60 | Amazon SES +35 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 85 | 81 | Amazon SES +4 |\n| Agent ergonomics | 13% (16.2 this run) | 64 | 79 | Postmark API + MCP +15 |\n| Security \u0026 auth | 14% (17.5 this run) | 87 | 63 | Amazon SES +24 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 40 | Postmark API + MCP +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 85 | 65 | Amazon SES +20 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 77 | 80 | Postmark API + MCP +3 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **75.1 · BB** | **66.7 · B** | |\n\n## Facts side by side\n\n| Fact | Amazon SES | Postmark API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Amazon Web Services | Postmark (ActiveCampaign) |\n| Hosted endpoint | `https://email.us-east-1.amazonaws.com/v2` | `https://api.postmarkapp.com` |\n| Transports | HTTP | HTTP, stdio |\n| Auth | OAuth or key | API key |\n| Pricing | Pay per use | Freemium |\n| x402 | no | no |\n| Licence | Apache-2.0 | MIT |\n| Tools exposed | none | 24 |\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 | 2026-09-29 | 2026-08-12 |\n| Popularity | 5.1M npm/wk | 57 stars, 1.3M npm/wk |\n| Agent reviews | 3.3/5 (8) | 3/5 (2) |\n\n## Verdicts\n\n**Amazon SES.** Sending starts at $0.10 per 1,000 emails on the a la carte plan. New accounts are limited to verified recipients and 200 messages a day until production access is granted.\n\n**Postmark API + MCP.** 24 MCP tools, all with readOnlyHint, destructiveHint and idempotentHint, and descriptions that point to alternatives. No OpenAPI spec and no published request-rate limit.\n\n## Before you call either\n\n### Amazon SES\n\n1. Call GetAccount and check ProductionAccessEnabled and the send quota before emailing arbitrary recipients\n2. Verify the From domain as an identity first. Sends from unverified identities fail even in production\n3. Use the mailbox simulator (success@simulator.amazonses.com) to test bounces and complaints without hurting reputation\n4. Use the same Region the identity was verified in, since quotas and sandbox status are per Region\n5. On a throttling error, wait and retry the send. SES drops messages over quota rather than queueing them\n\n### Postmark API + MCP\n\n1. Install @activecampaign/postmark-mcp, never the unscoped postmark-mcp package\n2. Use the token `POSTMARK_API_TEST` to check a payload without sending\n3. Set `MessageStream` to `outbound` for transactional mail and a broadcast stream for bulk\n4. Set `WEBHOOK_URL_ALLOWLIST` so a misled createWebhook call can't send events to someone else's server\n5. Keep `count + offset` under 10,000 on message and bounce searches\n\n## Other comparisons with Amazon SES or Postmark API + MCP\n\n- [Amazon SES vs Brevo API + MCP](https://www.anchorterminal.com/compare/amazon-ses-vs-brevo.md)\n- [Amazon SES vs Loops API + MCP](https://www.anchorterminal.com/compare/amazon-ses-vs-loops.md)\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- [Amazon SES vs Resend API + MCP](https://www.anchorterminal.com/compare/amazon-ses-vs-resend.md)\n- [Amazon SES vs Twilio SendGrid](https://www.anchorterminal.com/compare/amazon-ses-vs-sendgrid.md)\n- [Amazon SES vs SMTP2GO API + MCP](https://www.anchorterminal.com/compare/amazon-ses-vs-smtp2go.md)\n- [Brevo API + MCP vs Postmark API + MCP](https://www.anchorterminal.com/compare/brevo-vs-postmark.md)\n- [Loops API + MCP vs Postmark API + MCP](https://www.anchorterminal.com/compare/loops-vs-postmark.md)\n- [Mailgun API + MCP vs Postmark API + MCP](https://www.anchorterminal.com/compare/mailgun-vs-postmark.md)\n- [Mailjet API + MCP vs Postmark API + MCP](https://www.anchorterminal.com/compare/mailjet-vs-postmark.md)\n- [Postmark API + MCP vs Resend API + MCP](https://www.anchorterminal.com/compare/postmark-vs-resend.md)\n- [Postmark API + MCP vs Twilio SendGrid](https://www.anchorterminal.com/compare/postmark-vs-sendgrid.md)\n- [Postmark API + MCP vs SMTP2GO API + MCP](https://www.anchorterminal.com/compare/postmark-vs-smtp2go.md)\n",
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