I want to second that. I switched from PGP/MIME to inline PGP a while ago, since multiple of my contacts complained about troubles reading mails.
K-9 on android does not have support for PGP/MIME, probably wont have it for the time to come as it requires fundamental changes in the way the program stores the mails. There doesn't seem to be any open-source mail app on android that can handle PGP/MIME (correct me if I am wrong, I really like to know)
Windows Mail displays the mail's content as an attached text file, which is quite inconvenient.
On the plus side, several web clients I have encountered are now able to handle it. So there is hope.
One webclient that handles it well is roundcube (http://roundcube.net/). Others I have seen are the web interfaces of mail providers (i.e. posteo.de), which deploy their own webmail software, or strip all attribution from the user interface.
To be clear: I am talking of displaying a PGP/MIME mail correctly. I am not talking about verifying a signature or composing a signed/encrypted mail (which you probably shouldn't do in a web client anyway). Inline PGP is neither parsed nor recognized.
K-9 on android does not have support for PGP/MIME, probably wont have it for the time to come as it requires fundamental changes in the way the program stores the mails. There doesn't seem to be any open-source mail app on android that can handle PGP/MIME (correct me if I am wrong, I really like to know)
Windows Mail displays the mail's content as an attached text file, which is quite inconvenient.
On the plus side, several web clients I have encountered are now able to handle it. So there is hope.