Thunderbird, the open-source email application, is coming to Android thanks to the K-9 Mail Android email app project, which is joining Thunderbird to become the Thunderbird Android email app.

The Android 15 source code will be released next week, according to multiple sources. Here's what that means for users and developers.

So, to help in the fight against the iPhone at a time when Google had no mobile foothold whatsoever, Android was launched as an open source project.