MailWasher

MailWasher is a small email software, but it is very good at security and dealing with all kinds of spam, virus emails, and malicious harassment emails. You can classify emails as normal, virus, possible virus, possible spam, most likely spam, chain letters, and blacklisted, so you can manage your emails as you like.

When you find spam or virus mail, it allows you to delete the mail and also "reward" the mail to the sender. Of course, this is not the fundamental solution to the problem. MailWasher provides more powerful and professional management functions for dealing with spam and virus emails.
MailWasher automatically distinguishes spammers by customizing comprehensive filters for you using advanced MAPS RBL. Other features include support for multiple users, visual and sound prompts for new emails, minimization in the system bar, etc. It is compatible with POP3!

The ultimate spam blocker software. Supports using multiple email accounts, FirstAlert! real time spam blocking account, 7 day a week email support (phone 5 days), removes the banner advert. Over 8 million people use MailWasher Pro as their spam blocker - get your 30 day trial.

Update log:

1. Message reflections for custom filters are now applied after Base64 decoding the message
2. Correctly tuned for SMTP OAUTH options
3. Option to disable OAUTH added
4. Added support for Google OAUTH
5. Increase custom filter size
6. Operator customized filters are now supported
7. Supplementary reading column checkbox to mark/unmark all read messages
8. Vacuum MailWasher now runs database regularly
9. Quick replies now use replies correctly
10. Resolving OAUTH and recent patterns
11. Fixed the problem that some SSL accounts cannot log in
12. Fix behavior of setting scroll wheel when blur crashes