The purpose of this mail library is to provide a portable, efficient
middleware for different kinds of mail access. When using the drivers
interface, the interface is the same for all kinds of mail access,
remote and local mailboxes.

Current implemented drivers are mbox, MH, maildir, POP3, IMAP4rev1
and NNTP.

Homepage:
https://etpan.org/libetpan.html
