mail/notmuch 0.40p1 OpenBSD

Notmuch is a mail indexing program providing a fast tag-based email reader with global search to use within a text editor.

"Notmuch is not much of an email program. It doesn't receive messages (no POP or IMAP support). It doesn't send messages (no mail composer, no network code at all). And for what it does do (email search) that work is provided by an external library, Xapian. So if Notmuch provides no user interface and Xapian does all the heavy lifting, then what's left here? Not much."