Head to head
Agent Relay 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
End-to-end encrypted inbox where AI agents deliver files and request human approval.
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. The safety scan favours Email Inbox API + Sending by Sendmux (96/100 against 83). Email Inbox API + Sending by Sendmux is hosted and callable through the gateway; Agent Relay runs on your own machine. Email Inbox API + Sending by Sendmux has noticeably more public adoption.
| Agent Relay | Email Inbox API + Sending by Sendmux | |
|---|---|---|
| User rating | No reviews yet | No reviews yet |
| Safety grade | B83/100 | A96/100 |
| Adoption | Growing | Established |
| GitHub stars | 9 | 65 |
| Downloads / week | 40 | 327 |
| Runs where | Your machine (local) | Hosted (remote) |
| Gateway-ready | No | Yes |
| Tools | 4 | — |
| Write actions | 2 | — |
| Price per call | Free | Free |
| Licence | MIT | MIT |
| Last release | 2026-09-02 | 2026-09-19 |
| Category |