I like how easy and fast it was to setup SpamTitan, straightaway it was working how it should. It did not take a lot of configuring to get it to work. It has lots of features and the web gui is easy to use. I like that SpamTitan has updates build right in. SpamTitan sends a report to your users to let them know what emails have been quarantined in case there was a false match. SpamTitan catches lots and of spam and has good lists. It east to make white and black lists. You can self host SpamTitan Gateway on your own server.