#antispam

Mailstrix is the owl that finds malware hiding in your mail. It takes hostile attachments apart — unwrapping OLE2/OOXML, VBA, RTF objects, PDFs, archives and nested carriers — until YARA detection rules can finally see the dangerous bits. It runs out-of-process behind Rspamd (async HTTP), SpamAssassin, an ICAP server, Dovecot Sieve, or standalone

A flexible, plugin-based antispam bot for Telegram, written in Go.

A high-performance Go package for detecting disposable/temporary email addresses

PHP spam protection. CAPTCHA-free alternative

MIMEDefang is an e-mail filtering tool that works with the Sendmail “Milter” library. MIMEDefang lets you express your filtering policies in Perl rather than C, making it quick and easy to filter or manipulate your mail.