git send-email and git imap-send can send to a mailbox (the latter can be used to upload files to an IMAP folder). I don't know of a command that could downloa

git send-email and git imap-send can send to a mailbox (the latter can be used to upload files to an IMAP folder). I don't know of a command that could download patches from a mailbox (though it would be nice if git provided one that would work with IMAP and/or NNTP).