What are some alternatives?
SpamTitan - SpamTitan is an anti-spam email solution specifically developed to meet the demands of modern business. Delivering a spam detection rate over 99.9%
Mailwasher - Over 8 million people use MailWasher as their spam filter
BitNinja.io - BitNinja is the first integrated server defense network, can be installed within 1 minute on any...
Spamihilator - The free Anti-Spam-Filter Spamihilator removes more than 98% of spam mails before they even get into your inbox.
Happy Moose - Happy Moose is a super-efficient cloud anti-SPAM solution for organizations. It stops up to 99.
Spam Reader - Spam Reader is a free anti-spam add-on for Microsoft Outlook.