The small tool orientation is admirable. That said, who'd have predicted a new SMTP implementation in 2020?

Obligatory mention of Zawinski's Law: Every program attempts to expand until it can read mail. Those programs which cannot so expand are replaced by ones which can.

... via https://github.com/globalcitizen/taoup

mrmime is really cool - parsing a mail is extremely hard to get right.

Wow, this looks great. Safe and sane email send/receive/relay!