
About Tuta
Tuta is an encrypted email service that also includes a calendar and contacts. It offers a free account, and the code is published on GitHub under the GPL-3.0 license.
What it does
Tuta encrypts email, calendar and contact data end to end, so the company says it cannot read the content. It uses post-quantum cryptography, which the site describes as quantum-safe. The apps are designed to keep daily workflows fast and simple, and they work online and offline.
Key features
- End-to-end encrypted email, calendar and contacts
- Post-quantum encryption for stored data
- Custom domain email addresses
- Free mobile apps for Android and iPhone
- Apps that work online and offline
Who it's for
Tuta suits people who want private email without ads, and businesses that want privacy along with a custom domain. Users who rely on many third-party integrations should check compatibility before they move.
Pricing and good to know
A free account is available, and the site also lists paid tiers for more features. Tuta is open source under GPL-3.0, so the code is available to inspect. The company says it uses renewable energy to power its services.
Highlights
- End-to-end encrypted email, calendar and contacts
- Post-quantum encryption for stored data
- Custom domain email addresses
- Free mobile apps for Android and iPhone
- Apps that work online and offline












