mutt
mutt
TLDR
Open the specified mailbox
$ mutt -f [mailbox]
Send an email and specify a subject and a cc recipient
$ mutt -s [subject] -c [cc@example.com] [recipient@example.com]
Send an email with files attached
$ mutt -a [file1] [file2] -- [recipient@example.com]
Specify a file to include as the message body
$ mutt -i [path/to/file] [recipient@example.com]
Specify a draft file containing the header and the body of the message, in RFC 5322 format
$ mutt -H [path/to/file] [recipient@example.com]