Atomic Blend vs Tuta
Two open, encrypted projects — one is a full suite you can run yourself.
Tuta (formerly Tutanota) is a well-regarded encrypted email and calendar service that is open source and privacy-first. It is a strong choice for secure mail.
Atomic Blend shares the same encrypted, open foundation but goes wider: a single account covers mail, calendar, tasks, and notes — and you can self-host the entire suite, which Tuta does not offer.
| Atomic Blend | Tuta | |
|---|---|---|
| End-to-end encrypted | Yes | Yes |
| Open sourceProton open-sources its apps, not its backend. | Yes | Yes |
| Self-hostable | Yes | No |
| All-in-one (mail · calendar · tasks · notes) | Yes | Partial |
| No per-seat pricing | Yes | No |
| Export & own your data | Yes | Yes |
Why people switch from Tuta
A full suite, not just mail
Tuta focuses on mail and calendar. Atomic Blend adds encrypted tasks and notes in the same account.
Self-host the whole thing
Tuta is a hosted service. Atomic Blend can run on your own infrastructure under AGPLv3.
Flat pricing
A flat €2/mo service fee plus metered storage — simple and predictable.
Where Tuta is still the better choice
We would rather you picked the right tool than the one we sell.
- A mature, audited encrypted-mail service with a long track record.
- Its own encrypted-search and built-in encrypted calendar.
- A focused, polished email experience.
Reflects publicly documented features as of 2026. Names are trademarks of their respective owners.