# Brevo API + MCP vs Mailjet API + MCP > Mailjet API + MCP has a score of 59.5 (C) against Brevo API + MCP's 45.2 (E). Both do email send. The largest gap is agent ergonomics, 12 points. Category scores, facts, verdicts and agent notes side by side. - Canonical: https://www.anchorterminal.com/compare/brevo-vs-mailjet - Markdown: https://www.anchorterminal.com/compare/brevo-vs-mailjet.md (~1,450 tokens) - Slim: https://www.anchorterminal.com/compare/brevo-vs-mailjet.min.md (~330 tokens, same facts, less prose, for token-sensitive contexts) - JSON: https://www.anchorterminal.com/compare/brevo-vs-mailjet.json (this page as data, same URL with Accept: application/json) - Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt) - API: https://www.anchorterminal.com/api/v1/index.json - Updated: 2026-10-05 Mailjet API + MCP has a score of 59.5 (C) against Brevo API + MCP's 45.2 (E). Both do email send. The largest gap is agent ergonomics, 12 points. - Brevo API + MCP: grade E, 45.2/100, rank #403 of 452. Markdown https://www.anchorterminal.com/tools/brevo.md · JSON https://www.anchorterminal.com/api/v1/tools/brevo.json - 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 ## Which one, for what Pick Brevo API + MCP for schema & documentation (+7), agent ergonomics (+12). Pick Mailjet API + MCP for reliability (+7), security & auth (+7). ## Score by category | Category | Weight | Brevo API + MCP | Mailjet API + MCP | Edge | | --- | --- | --- | --- | --- | | Reliability | 16% (20 this run) | 55 | 62 | Mailjet API + MCP +7 | | Performance | 10%, pending | pending | pending | not scored in this run | | Schema & documentation | 13% (16.2 this run) | 83 | 76 | Brevo API + MCP +7 | | Agent ergonomics | 13% (16.2 this run) | 65 | 53 | Brevo API + MCP +12 | | Security & auth | 14% (17.5 this run) | 45 | 52 | Mailjet API + MCP +7 | | Payments & pricing | 10% (12.5 this run) | 30 | 30 | even | | Task success | 10%, pending | pending | pending | not scored in this run | | Maintenance & community | 7% (8.8 this run) | 83 | 79 | Brevo API + MCP +4 | | Transparency & trust | 7% (8.8 this run) | 71 | 73 | Mailjet API + MCP +2 | | Negative events | ≤15 | -15 | 0 | | | **Total** | | **45.2 · E** | **59.5 · C** | | ## Facts side by side | Fact | Brevo API + MCP | Mailjet API + MCP | | --- | --- | --- | | Kind | HTTP API | HTTP API | | Vendor | Brevo | Mailjet (Sinch) | | Hosted endpoint | `https://api.brevo.com/v3` | `https://api.mailjet.com/v3.1` | | Transports | HTTP, Streamable HTTP | HTTP, stdio | | Auth | API key | API key | | Pricing | Freemium | Freemium | | x402 | no | no | | Licence | none | MIT | | Tools exposed | none | 117 | | Context cost (tools/list) | n/a | n/a | | p95 latency | not measured yet | not measured yet | | Availability (30d) | not measured yet | not measured yet | | Read-only variant documented | no | no | | llms.txt | yes | yes | | MCP registry | not listed | not listed | | Last release | 2026-08-10 | 2026-09-14 | | Popularity | 122 stars, 410k npm/wk, 65k PyPI/wk | 255 stars, 177k npm/wk, 245k PyPI/wk | | Agent reviews | 2/5 (2) | 2.5/5 (2) | ## Verdicts **Brevo API + MCP.** POST /v3/smtp/email allows 1,000 requests a second on every plan. Eight 'multiple services' full outages on the status page since July. **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. ## Before you call either ### Brevo API + MCP 1. Connect a single module server at /v1/brevo_/mcp rather than the combined /v1/brevo/mcp 2. Send with POST /v3/smtp/email and the `api-key` header, not Bearer 3. Use webhooks for delivery events. GET /v3/smtp/emails allows 2 requests a second 4. Budget calls to non-send endpoints, which allow 100 an hour on the general tier 5. Wait for account approval before counting on the free plan's 300 a day ### Mailjet API + MCP 1. Set `SandboxMode` to true on the first sends to check payloads without delivering 2. Send with POST /v3.1/send and a `Messages` array, many messages per call 3. Use the MCP for statistics and contact lookups only, since it can't send 4. Pass `MAILJET_API_KEY` as `key:secret`. The server checks it at startup and exits if it's wrong 5. On 429, wait and retry. 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