Thanks to an awesome community K-9 Mail currently ships with support for 47 languages. The next beta release will add a Malayalam translation and increase this number to 48.

If you want to join this effort, head over to transifex.com/k-9/k9mail

Fosstodon

Fosstodon is an English speaking Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.