Spamihilator - The free Anti-Spam-Filter Spamihilator removes more than 98% of spam mails before they even get into your inbox.
SpamTitan - Comprehensive Email Protection. 99.99% Spam Detection. Blocks phishing, viruses, malware and other email threats.
Mailwasher - Over 8 million people use MailWasher as their spam filter
MailCleaner - Cloud & on-premise anti spam software for businesses
SpamAssassin - Use this program to "Unspam" your mailbox(es).
Vade Secure - Email security to protect against email-borne phishing, spear phishing, malware, and ransomware. Email security and management based on artificial intelligence.