Head to head
Lettio MCP vs Email Inbox API + Sending by Sendmux
Same numbers we show everywhere else, lined up. Ratings come from users, the grade comes from our scanner, adoption comes from public registries.
No reviews yet
Private, EU-hosted email for AI agents over JMAP: read, search, reply, organize, send.
Full listing
No reviews yet
AI email inbox and sending tools with attachments, search, live events, and webhooks.
Full listingThe short version
Neither has been reviewed yet, so the comparison rests on the scan and the public usage numbers. Both score close on the safety scan (93 and 96 out of 100). Email Inbox API + Sending by Sendmux has noticeably more public adoption.
| Lettio MCP | Email Inbox API + Sending by Sendmux | |
|---|---|---|
| User rating | No reviews yet | No reviews yet |
| Safety grade | A93/100 | A96/100 |
| Adoption | Growing | Established |
| GitHub stars | 0 | 65 |
| Downloads / week | 60 | 327 |
| Runs where | Hosted (remote) | Hosted (remote) |
| Gateway-ready | Yes | Yes |
| Tools | — | — |
| Write actions | — | — |
| Price per call | Free | Free |
| Licence | MIT | MIT |
| Last release | 2026-09-15 | 2026-09-19 |
| Category |