Snug Security

Has the very latest in Anti-Spam technology built-in using a User extendable Plug-in architecture

Uses Bayesian Spam Filters, Tracking Email Killer, SPAM-IP Filtering, Blacklist/Whitelist Filtering, Regular Expression, Email Attachment filtering, Attachment Stripping and HTML Stripping

Interfaces with any VSAPI compliant Anti-Virus scanner

Uses SSL/TLS Encryption

Uses S/MIME Encryption

SMTP/POP3 Authentication Login

And so much more...