Open source guarantees that no one can hide an encryption backdoor in the code. That's why we have published the entire client code - web client, Android & iOS apps, desktop clients - under GPLv3 on GitHub.
Only with open source, tech-savvy people can audit the code and verify that Tutanota is doing what we promise: Protecting your private data to the maximum.
Plus, open source enables other projects like F-Droid and Linux distributions to build the Tutanota app themselves making the need to trust us redundant.
Are you working on an open source project and looking for a secure mailbox for your team? Then apply for Tutanota Premium for free!
Please send us an email with the following information from your official GitHub email address or from your (custom domain) email address that is linked to your project's website:
To apply, you need to be a project lead or a core contributor for an open source project that is at least 30 days old and actively maintained.
Open source projects need to use a standard open source license and must be non-commercial. Your project should not have paid support or pay contributors. If you or your company work on commercial projects, the business version of Tutanota will suit you perfectly.
- 1 GB storage
- Multiple custom domains
- Unlimited search
- Multiple calendars
- 5 aliases
- Inbox rules
- Support via email
- Event invites
- Share calendars (Sharing feature can be added)
We'll review all requests and accept them at our discretion. Good luck! 😀
Check here how we have succeeded to build open source email apps that work completely without any Google dependencies.
We are proud to support the following open source teams with the Tutanota software donation: