Head to head
Atomic Mail vs Siglio
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
Programmable email inbox for AI agents — JMAP, PoW auth, stdio MCP server.
Full listing
No reviews yet
MCP server for Siglio. Lets an AI assistant send documents for e-signature by email or text.
Full listingThe short version
Neither has been reviewed yet, so the comparison rests on the scan and the public usage numbers. The safety scan favours Atomic Mail (93/100 against 55). Atomic Mail is hosted and callable through the gateway; Siglio runs on your own machine. Atomic Mail has noticeably more public adoption.
| Atomic Mail | Siglio | |
|---|---|---|
| User rating | No reviews yet | No reviews yet |
| Safety grade | A93/100 | C55/100 |
| Adoption | Established | New |
| GitHub stars | 260 | – |
| Downloads / week | 129 | 792 |
| Runs where | Hosted (remote) | Your machine (local) |
| Gateway-ready | Yes | No |
| Tools | — | — |
| Write actions | — | — |
| Price per call | Free | Free |
| Licence | MIT | MIT |
| Last release | 2026-09-18 | — |
| Category |