Letterbox

Version: 0.24b9

Free

★ ★ ★ ★ ★

Adds three-column view to Mail.app; does not support OS X 10.7 or later.

Letterbox overview

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.

What's new in version 0.24b9

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 l