Text-based email client

A text-based email client is an email client with its user interface being text-based, occupying a whole terminal screen. Other kind of email clients are GUI-based (cf. email client) or Web-based, see Webmail.
Text-based email clients may be useful for users with visual impairment or partial blindness allowing speech synthesis or text-to-speech software to read content to users. Text-based email clients also allow to manage communication via simple remote sessions, e. g. per SSH, for instance when it is not possible to install a local GUI-client and/or access mail via Web interface. Also users may prefer text-based user interfaces in general.
List of text-based email clients.
Notable clients include: 
Email software for the command line that does not occupy the whole screen (cf. TUI) include e. g. Cleancode eMail, himalaya, mail (Unix), mailx, nmh, procmail, sendmail, and many others.