pine is a mail program developed at the University of Washington. It has easy-to-remember single character commands and a menu interface which displays those available at each point.
You might choose to use pine if you like learning new tools by exploration rather than reading a manual. The menu system is designed to handle mistakes by new users, and the on-line help system offers advice specific to whatever screen you are currently viewing.
Start using pine with the command:
pine
You may also find pine to be helpful if you wish to use more than one mailbox to manage your electronic mail.