Download

K-9 Mail is available through a variety of channels.

Google Play

Get it on Google Play

Amazon

K-9 Mail in Amazon's Appstore for Android

F-Droid

K-9 Mail is also available from the F-Droid Repository – a catalog of FOSS (Free and Open Source Software) applications for the Android platform. F-Droid builds are built from source by the F-Droid team and signed by them.

K-9 Mail on F-Droid

GitHub

Both stable and development versions are available on the project’s GitHub site.