No specific info about version 2.5. Please visit the main page of Anti-Spam SMTP Proxy Server on Mac Informer.
SpamSieve is a highly configurable spam filtering application.
Browse the web anonymously from your Mac computer.
A Chromium-based Internet browser with some unique features.
Redirect your computer's network connections through proxy servers.
It lets you target and block distracting websites so you can be more productive.