KMail

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

Main Features

Supports the standard mail protocols IMAP, POP3 and SMTP.
Supports authentication via NTLM (Microsoft Windows) and GSSAPI (Kerberos)
Supports plain text and secure logins, using SSL and TLS.
Integration of international character sets
Spell-checking (as-you-type and on demand)
Native support for inline OpenPGP, PGP/MIME, and S/MIME.
Reading and writing of HTML mail.
Ability to display plain text only from an HTML mail.
Allows you to receive and accept invitations.
Integration with popular spam checkers, e.g. SpamAssassin, Bogofilter, etc.
An optional spam probability meter can be displayed
Powerful search and filter abilities
Can import mail from many other clients
Searching in IMAP folders fully supported
Highly integrated with other Kontact components
Encrypted password saving in KWallet

Other Features

Flagging and tagging of messages to aid sorting and recovery of information
Supports mailing list management features
Can replace text smilies with emoticons
Displays the sender's picture or avatar if present in the address book
Supports X-Face (b/w pictures in messages)
Compression of attachments

Groupware

KMail supports Groupware functionality. You can receive invitations from colleagues and accept them. As you accept them, they are entered into your calendar. To view your calendar, start KOrganizer or Kontact.

Screenshots

See this page for several views.

KMail's Toolbox

This page discusses the following issues -

KMail and PGP/MIME

KMail and PGP/MIME discusses

Prerequisites
Installation of GnuPG
Setting up gpg-agent and
Checking that it works in KMail

The Development Team

A list of the many developers is available here.

FAQs, Hints and Tips

For ease of reading these have been moved to their own page.