Clyton Icon


Free Download 19.38 MB - Tested clean
Screenshot of Clyton 21.0, an e-mail client app for the Windows operating system.
Free Trial
Windows 10 / 8 / 7 / Vista / XP
Oct 23, 2019
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Sven Sorensen

An email client with advanced security and spam filtering features

A review of Clyton by Sven Sørensen

Clyton is well known to have a lot of features and it doesn't fail to deliver them either. The program has built-in lists of spam filters with banned addresses and domains that won't even have the chance to send an email to you. The whole spam filter feature is actually a community effort where everyone can add suspicious domains.

The program is perfect for managing a lot of emails at a time. There are two buttons for receiving all emails in your inbox (which basically checks all your added mailboxes for new mails) and also a button for sending everything that you have prepared in your outbox.

There is a lot of customization that can be made in the program. Emails can be edited with a WYSIWYG (what you see is what you get) interface or manually with HTML code. The interface can also be customized but it's probably the weakest part of the program. At a first glange, Clyton seems outdated, but the interface is still easy to use.

Overall, Clyton is a great email manager and well worth the money, or at least a try.


Features and highlights

  • Portable: Can be installed to a USB flash drive (a.k.a. thumb drive, memory stick)
  • Built-in address book supports custom fields and import / export
  • Send personalized mass mail to a filtered set of address book contacts
  • Supports text search in a single folder or globally
  • Whitelisting prevents false positives by the spam engine
  • Supports message templates with merged fields
  • Message drag & drop supported
  • Attachment viewer supports a wide variety of image formats, HTML, and MIME. Images can be zoomed in and out
  • Multithreaded design keeps the user interface responsive
  • Compose email formatted in HTML with a powerful editor. Includes spell-checking
  • Supports both POP3 and IMAP4 mail server protocols
  • Works with Gmail and Yahoo
  • Messages can be organized in folders and color coded
  • Multiple messages can be selected with the Shift and Ctrl keys
  • The Forward and Redirect features support multiple destination addresses
  • Old messages can be automatically deleted (by age or count) from the Trash and Spam folders
  • Attachments can be automatically included in newly composed messages
  • Reminds of birthdays and anniversaries
  • Highly configurable user interface
Compability and license

This download is licensed as shareware for the Windows operating system from email software and can be used as a free trial until the trial period ends (after an unspecified number of days). The Clyton 21.0 demo is available to all software users as a free download with potential restrictions and is not necessarily the full version of this software.

Compatibility with this e-mail client software may vary, but will generally run fine under Microsoft Windows 10, Windows 8, Windows 8.1, Windows 7, Windows Vista and Windows XP on either a 32-bit or 64-bit setup. A separate x64 version of Clyton may be available from Gammadyne Corporation.

Filed under:
  1. Clyton Download
  2. E-mail Client Software
Clyton has been picked by our editors as excellent.
Clyton has been tested for viruses and malware.
We have tested Clyton 21.0 against malware with several different programs. We certify that this program is clean of viruses, malware and trojans.

Screenshots of Clyton (6)

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Ranking in
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#14 of 47
4.7 out of 5 based on 3 ratings.

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Download Details

System Architecture:
Windows 10 32-bit, Windows 10 64-bit, Windows 8 32-bit, Windows 8 64-bit, Windows 7 32-bit, Windows 7 64-bit
Size on disk:
20,320,904 B
SHA256 filehash:
MD5 filehash: