Mutt is a text-based mail client renowned for its powerful features. Though over 2 decades old, Mutt remains the mail client of choice for a great number of power-users.
I use mutt to read my emails as a daily basis. I use offlineimap to sync my
emails data base.
msmtp to send emails from different emails account without
having to sync them.
I just decided to use asciinema to upload one typical part of a mutt session: reading emails, and answering using the text editor of your choice.