k-9 mail encrypted with APG is NOT compatible with apple email client If an apple user encrypts using PGP in an apple mail client  then the encrypted email has message: """"""""""""""""NO text"""""""""""""""" and the encrypted text is shown as attachment encrypted.pgp on an android  4.04 using k-9 mail and APG  that attached encrypted.pgp can NOT be opened as android offers only a few apps to open but NO choice to select """"""""""""""""other"""""""""""""""" apps such as k-9 mail or AGP hence apple created/sent email can NOT be read AT ALL ON ANDROID 4.04 besides that - in all other communications k-9 mail is an excellent application and works perfectly for encrypted or clear language email = BETTER than any other app used for emailing excellent mail box handling""
January 27 2014