When I was a Mac user, I kept my million-plus-email archive in Apple's Mail.app program, and suffered through incredible delays whenever I tried to open or search my archival mailboxes (for what it's worth, I'm thrilled and delighted with the performance
Letterbox is a plugin for Apple's Mail.app that takes advantage of your widescreen monitor. It rearranges the interface into three vertical columns – so the message pane is to the right of the message list, rather than below. You'll probably need at lea