Provided you are willing to build the alias [1] mapping list, mutt can use aliases on the CLI to send emails. So if you had aliased "user@example.com" to "bob"

Provided you are willing to build the alias [1] mapping list, mutt can use aliases on the CLI to send emails. So if you had aliased "user@example.com" to "bob", you could do: mutt -s "Test Subject" bob < body.txt I do not know of a way to automatically generate a mutt alias file from a gmail address book. [1] Mutt refers to its address book as "aliases".