K-9 Mail is an open source email client with support for multiple accounts, search, IMAP push email, multi-folder sync, flagging, filing, signatures, BCC-self, PGP/MIME & more! K-9 supports IMAP, POP3 and Exchange 2003/2007 (with WebDAV). Install the app "OpenKeychain: Easy PGP" to encrypt/decrypt your emails using OpenPGP. K-9 is a community developed project.
This application was scanned for viruses and it was found 100% secure. K-9 Dog Walkers has created the app that falls into the Communication category. Users rated K-9 Mail 3.9 on Google Play.
This application was downloaded and set up by over 5M users and the most recent stable update was on Sep 7, 2018. The app is very popular among Samsung and LG users. A free .apk file of K-9 Mail 5.206 is available from Droid Informer and you can check out users' reviews on this site. Prepare 5 MB of free space on your device for this app setup package and take into account that it works fine on Android 4.0.3 and above.
According to the users’ feedback, the strong sides of the app are a user-friendly interface, great functionality, great performance, update notifications, auto updates, battery optimization and great support. In users’ view, you can notice syncing issues, freezing issues and lots of ads among the disadvantages of this application.
Comments
I have been using K9 for some years and I have been very satisfied. However, the last months I do not see the same messages in K9 and in the POP3 account. K9 simply is out of sync almost all the time. Therefore, I cannot delete messages in K9, and I never know if I see all messages that I can find in the folder. In addition, old messages keep coming on top as if they were brand new.
I have 15000 messages in the POP3 inbox folder. I do not know if the number of messages is important.
Do you have known sync issues?