MailStore Home lets you archive your private email from almost any email source and search through them extremely quickly. You will never lose emails again. Free Email Archiving Software for Home Users
For home users, emails are also a valuable source of information. A large amount of data and important files is saved in the form of emails. With MailStore Home you can backup all emails in a central archive, even if they are distributed across different computers, programs or mailboxes. You can do this either on your PC or on a USB drive as a "portable" option.
This way, you will never lose emails again and can search all of your emails extremely fast. You can still reply to or forward archived emails by opening them with a single mouse click in your standard email program.