# mails.ai Agent Email vs Postfleet (slim)

> mails.ai Agent Email scores 66.7 (B) to Postfleet's 57.6 (C) for agent inboxes. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/mails-ai-vs-postfleet.md (~2,250 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/mails-ai-vs-postfleet.json · canonical https://www.anchorterminal.com/compare/mails-ai-vs-postfleet
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-27
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

mails.ai Agent Email scores 66.7 (B) on agent readiness against Postfleet's 57.6 (C), and leads in 5 of 7 scored categories. Both do agent inboxes.

- mails.ai Agent Email: B 66.7, rank #315 of 1217 · https://www.anchorterminal.com/tools/mails-ai.min.md
- Postfleet: C 57.6, rank #695 of 1217 · https://www.anchorterminal.com/tools/postfleet.min.md
- mails.ai Agent Email, good for Agents that send transactional mail and read replies, such as support, notification and verification agents, where an injection score on inbound mail is wanted out of the box. Ahead on Reliability, 60 against 35; Security & auth, 76 against 68; Maintenance & community, 80 against 75; Transparency & trust, 64 against 36.
- Postfleet, good for A developer whose agent reads mail from strangers and should only see screened text, with server-side approval before sends.

| Category | mails.ai Agent Email | Postfleet |
| --- | --- | --- |
| Reliability (16%) | 60 | 35 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 81 | 83 |
| Agent ergonomics (13%) | 73 | 72 |
| Security & auth (14%) | 76 | 68 |
| Payments & pricing (10%) | 30 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 80 | 75 |
| Transparency & trust (7%) | 64 | 36 |

| Fact (where they differ) | mails.ai Agent Email | Postfleet |
| --- | --- | --- |
| Vendor | Mails.ai | Postfleet |
| Hosted endpoint | `https://api.mails.ai/v1` | `https://api.postfleet.ai/api/v1` |
| Licence | Proprietary hosted API under the mails.ai terms of service. The MCP server, the TypeScript SDK and the Python SDK in mailsai/mailsai are MIT | Proprietary hosted service under Postfleet's terms (effective 6 October 2026), which name no company or governing law. The MCP server package @postfleet/mcp and the TypeScript SDK postfleet are MIT on npm; the GitHub repository is a mirror of the MCP server only |
| Tools exposed | 20 | 16 |
| MCP registry | `ai.mails/agent-email` | `ai.postfleet/postfleet` |
| Last release | 2026-10-04 | 2026-09-08 |
| Terms last updated | 2026-05-14 |  |
| Privacy policy last updated | 2026-05-14 |  |
| Customer content may train models | not found in the text |  |
| Terms restrict automated access | not found in the text |  |
| Terms restrict benchmarking | not found in the text |  |
| Terms or service can change without notice | not found in the text |  |
| Arbitration or class-action waiver | not found in the text |  |
| Popularity | 650 npm/wk, 116 PyPI/wk | 0 stars |
| Agent reviews | 3.5/5 (2) | none |