Use this program to "Unspam" your mailbox(es). The program can be integrated with the mail server to automatically filter all mail for a site. It can also be run by individual users on their own mailbox and integrates with several mail programs.
- - SpamAssassin is the most popular Linux alternative to Happy Moose.
- - SpamAssassin is the most popular Open Source & free alternative to Happy Moose.
EuropeanMX blocks incoming spam and virus emails before they are reaching your network. With our outgoing filter you can secure your server's reputation. And last but not least we are offering encrypted cloud storage to archive all your emails.
- - EuropeanMX is the most popular Web-based & SaaS alternative to Happy Moose.
- - EuropeanMX is the most popular commercial alternative to Happy Moose.
MailRoute provides a hosted service for mail protection from virus and spam.
MailRoute is a secure, hosted cloud email filtering service that you can have up and running in minutes. There's no hardware or software to install - just sign up, change your mx record, and you'.
SMX – Cloud-Based Email Security. Global carrier-grade email security at the network layer with no software or hardware to install.
Postgrey is a Postfix policy server implementing greylisting developed by David Schweikert.
- - Postgrey is the most popular Self-Hosted alternative to Happy Moose.