Consequently, all donations previously going to K-9 now go to the Thunderbird project. Thunderbird is now the legal home of K-9 Mail.

For discussions about the future of the app we’ve created the Thunderbird Android Planning Topicbox group. If you want to help shape the app, please continue to provide bug reports, feature requests, and general feedback. Just continue to use the app and enjoy it getting better over time. Changes for existing K-9 Mail usersĪs a user of K-9 Mail, there’s nothing you have to do right now. Once a certain level of functionality is reached, K-9 Mail will transform into Thunderbird on Android, and will be renamed accordingly. The roadmap for the near future includes improved account setup using Thunderbird account auto-configuration, improved folder management, support for message filters, and synchronization between the mobile app and Thunderbird on the desktop. And so it was a very easy decision to work together. Both projects share the same core values: privacy, open standards, and an open development process. Our visions for an improved mobile app were more or less identical. The conversation about how Thunderbird on desktop and K-9 Mail on Android could better work together had been going on since 2018.

I’m very excited to announce that K-9 Mail is now part of the Thunderbird family 🎉 As you may have guessed from the title of this post, the Thunderbird project came to the same conclusion. Some of you have mentioned that it might have been a better strategy to support one of the existing open source email clients on Android rather than creating a new one. A few weeks ago you might have read that the Thunderbird project is working on a mobile email client.

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