Microsoft 365 - Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online
SpamAssassin - Use this program to "Unspam" your mailbox(es).
Apache OpenOffice - Apache OpenOffice is an open source, office document productivity suite.
MailScanner - MailScanner is a open source email security system design for Linux-based email gateways.
SoftMaker Office - SoftMaker Office is one of the most powerful and reliable office suite that is fully compatible with the MS Office Suite.
Rspamd - Rspamd is an advanced spam filtering system that allows evaluation of messages by a number of rules...