Davide Principi on Twitter: "@NethServer has got a new, alternative, email module implementation based on @rspamd a fast, free and open-source spam filtering system - https://t.co/96BE3mrX3K https://t.co/FY2aHSJYu8" / Twitter
Spam Filter – DataDrivenInvestor
Best Free Open Source Anti-Spam Software
6 Best Free and Open Source Linux Anti-Spam Tools - LinuxLinks
E-mail spam and non-spam filtering using Machine Learning