Clyton is an email client with advanced security and spam filtering features. Although priced for the general public, Clyton possesses the reliability and security required by businesses.

Version: 24.0Clyton is an email client with advanced security and spam filtering features. The spam filter is highly configurable and supports DNS blacklist checking (DNSBL).
License: Free To Try $25.00
Operating System: Windows
Homepage: www.gammadyne.com
Developed by:
Expect 85% of spam to be eliminated with the default configuration. Email that is suspicious but not obviously spam is quarantined for 24 hours and then retested, providing the blacklist enough time to react to new spam sources.
The built-in address book supports personalized mass-mailings. Received email cannot run scripts, download multimedia, or use embedded objects without the user's approval.
Other features include encrypted storage, whitelisting, powerful HTML editor, attachment viewer, message drag and drop, custom message templates, SSL encryption, USB flash drive installation, and much more.
What's New
Version 24.0: Added IMAP4 synchronization. Added OAuth authentication for Microsoft servers.
Version 23.0: Attachments now appear below the message body. Added 90 smilies.
Version 22.0: Added support for GMail's OAuth authentication.
Version 21.0: Added the 'Snooze' tool.
Version 20.0: Improved the toolbars and added support for TLS 1.3
Version 19.0: Added the ability to examine only unread emails on an IMAP server.
Version 18.0: Redesigned the Mailboxes branch.
Version 17.0: Added support for S/MIME.
Version 16.0: The contact's portrait now appears in the Messages List.
Version 15.0: A photo can be provided for each contact.