KMail is the email component of Kontact, an integrated personal information manager.

The mail component is provided by KMail. Here a list of some highlights:

* IMAP, POP3 and SMTP support
* secure logons with SSL, TLS or DIGEST-MD5
* signing and encrypting of emails (both PGP and GnuPG are supported)
* reading of HTML mails
* anti-spam functions
* supports all international character sets
* powerful search and filter functions
* spell checking
* imports folders from many other mail clients
* highly integrated with other components

and many more!

Similar applications: 
ThunderBird, Evolution, Microsoft Outlook, Microsoft Outlook Express, Microsoft Windows Mail, Mail