APG is discontinued. You should use OpenKeychain now instead - http://www.openkeychain.org http://www.openkeychain.org - OpenKeychain does everything APG did, m

APG is discontinued. You should use OpenKeychain now instead - http://www.openkeychain.org http://www.openkeychain.org - OpenKeychain does everything APG did, more, and has a much nicer interface. It even lets you use a Yubikey as a PGP smartcard over NFC so you don't have to store your PGP keys on your phone - https://grepular.com/An_NFC_PGP_SmartCard_For_Android https://grepular.com/An_NFC_PGP_SmartCard_For_Android The one thing that K-9 misses, which is pretty major IMO, is PGP/MIME support. It only works with inline PGP.