As other's have pointed out, sending emails from the command line is a solved problem [1]:
sendmail user@example.com < email.txt
mail -s "Test Subject" user@example.com < body.txt
What keeps me from actually using this, is the lack of Address Book, as I don't memorize email addresses from all my friends and colleagues. Any suggestions on how to integrate my Gmail Address book into a command line workflow?[1] https://stackoverflow.com/questions/57410259/how-to-send-an-...