Reeva vs Proton Mail
Proton Mail popularized end-to-end encrypted email for consumers. Reeva takes a different bet: build a privacy-respecting service on open standards — JMAP, IMAP, SMTP, CalDAV — so any client works natively and your data never gets trapped. Here is how the two compare.
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| Feature | Reeva | Proton Mail |
|---|---|---|
| Custom domain (paid) | ||
| JMAP native protocol — Proton uses a proprietary API; IMAP/SMTP via Bridge | — | |
| IMAP / SMTP without an extra bridge app | — | |
| Encryption in transit (TLS) | ||
| Encryption at rest | ||
| End-to-end encryption for messages between users on the platform | TLS + at-rest | E2EE |
| Encrypted calendar | ||
| Password vault | ||
| File cloud bundled with mail | ||
| Open-source mail server (Stalwart) | — | |
| Free plan | ||
| Web app | ||
| Desktop & mobile apps |
When Reeva is the better fit
- You want first-class IMAP / JMAP / SMTP without a bridge app.
- You prefer an open-source mail engine you can audit (Stalwart).
- You want a unified subscription for mail, calendar and cloud at lower entry prices.
When Proton is the better fit
- End-to-end encrypted messaging between accounts is a hard requirement.
- You want a long-established Swiss provider with a large user base.
Information about Proton Mail reflects publicly documented features at time of writing. See Proton's website for current details. We do our best to keep this comparison accurate — tell us if we got something wrong.