Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
MailStore - MailStore Home - A 100% free single-private-user desktop solution
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
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.
Mailspring - Mailspring is a mail client for Mac, Windows and Linux.
Intradyn Email Archiver - Orca Email Archiver provides email archiving solution for local government and business.