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Mozilla Thunderbird Open-Source Email Client Is Coming to Android Devices

After years of talks, both the Mozilla Thunderbird and K-9 Mail projects have decided to focus their efforts on an improved version of the K-9 Mail open-source Android email app by offering users a better account setup experience using Thunderbird’s account auto-configuration wizard, the ability to sync Thunderbird desktop and mobile apps, support for message filters, and improved folder management.