xdg-email(1) on Linux
The text 8dcc980e2ee6, as Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it.
command line tool for sending mail using the user's preferred e-mail composer
Flags it lists
-
--attach -
--bcc -
--body -
--cc -
--help -
--manual -
--subject -
--utf8 -
--version