git clone https://orangeshoelaces.net/git/tttm.git
tttm - mail retrieval agent. Fetches mail from IMAP4rev1 inbox and delivers each message via standard input to anohter program. Transfered mail gets expunged from server afterwards. See manual for details. Works on OpenBSD. Likely to behave just as fine on other BSDs, Linuxes and other POSIX-friendly operating systems. Needs a decent C compiler (uses some of C11 feats) with standard library.