OwnBackup - OwnBackup provides automated backups of SaaS and PaaS data and restore tools for disaster recovery.
MailStore - MailStore Home - A 100% free single-private-user desktop solution
SolarWinds Backup - Modern server backup software
Hornetsecurity Email Archiving - Hornetsecurity Email Archiving is one of the advanced software that offers long-term, unchangeable, and secure storage of important company information, data, and flies.
Datto Backupify - Protect your business with backup.
Intradyn Email Archiver - Orca Email Archiver provides email archiving solution for local government and business.