Anti-Spam SMTP Proxy Server implements multiple spam filters
Take back control of your email with this mail server in a box
Rapid spam filtering system
Simplistic interactive filtering tool
Provides mechanisms for walking through any arbitrary PHP variable
PHP Email address validator
Google Apps Script to send third party recruiter email to spam
Fast Bayesian spam filter along lines suggested by Paul Graham
Per user/admin filtering of individual/group emails
SMTP email proxy and relay server
Free Extracts Emails, Phones and custom text from Web using JAVA Regex
Anti Spam SMTP Gateway
Remote anti spam utility
Blazor Table component with sorting, paging and filtering
Antivirus and Security Suite for Windows
Python API for Sendmail Milters.