GNU/Linux Desktop Survival Guide
by Graham Williams
Numerous tools work together to set you up with email. However, an excellent all-in-one graphical tool is Evolution (Chapter 26), which provides similar functionality and the look-and-feel of Microsoft Outlook. Evolution is likely to satisfy the needs of the regular GNU/Linux user, and also provides access to Microsoft Exchange servers and accessing your email from other POP and IMAP servers. See Chapter 26 to get started with Evolution.
To delve into the more sophisticated, and sometimes quite more flexible, tools, Debian has many options. Fetchmail can retrieve email from multiple POP/IMAP servers and deliver it to your (possibly local) MTA (Mail Transport Application). Exim, postfix, qmail, and sendmail are MTAs--they will dispatch email to users. Generally exim4 is used. Procmail can then sort incoming email into different mailboxes for an individual user. Spamassassin and clamav can be called on to filter out spam and viruses. You can store your email in the Maildir format, setting up a local IMAP server using courier-imap to serve the email to mail readers like mutt, evolution, and even the web-based email tool squirrelmail. For IMAP access to your mbox mail file use dovecot-imapd.