I have thousands of e-mail messages in my corporate Outlook in-box, and thousands more in Gmail and in my ancient Hotmail account. Mailstore home is a free program that can archive them all locally, and display those archives in an interface that reads like your Outlook in-box.

Why use it? You can clear away old messages and attachments, but easily search to find them again when that inevitable moment arrives. Until universal offline in-boxes like start addressing consumers on a wider scale, MailStore Home is also a good way to read mail offline in areas of spotty Wi-Fi, or to use as a de facto message backup.