pop
Send emails from your terminal.
TLDR
Launch the Text-based User Interface
$ pop
Send an email using the content of a Markdown file as body
$ pop < [path/to/message.md] --from [me@example.com] --to [you@example.com] --subject "[On the Subject of Ducks...]" --attach [path/to/attachment]
Display help and exit
$ pop --help