K-9 Mail is an open source email client focused on making it easy to chew through large volumes of email

The K-9 Mail application was not updated for a long time in the Google Play Store (when I last checked), so I was surprised to find an updated version in FDroid after I made the switch from Google to non Google services.

The newer K-9 Mail app has a slick interface and handles my not-that-considerable email load well. It’s the best out of all the FOSS Android email clients I’ve tried so far.