Shift Box is a Thunderbird extension that will automatically record your inbox's activity, allowing you to replay emails the way they arrived, using the controls from the toolbar. It also works with RSS accounts.
Shift Box is an open source add-on designed to work with Mozilla Thunderbird 3.0 and later.
How to Install in Thunderbird:
1. Right-click the link below and choose "Save Link As..." to download and save the file to your hard disk.
2. In Mozilla Thunderbird, open Add-ons from the Tools menu.
3. Click the Install button, and locate/select the file you downloaded and click "OK".
What's New in This Release: [ read full changelog ]
· Fixed bug : New incoming emails don't update the red bubble (only for filtered and virtual folders)-.
· Fixed bug : The red bubble disappears when you select another folder (now, the red buffered bubble is applied to each folder)
· Fixed bug : Right click should not activate play/stop buttons
· Shortcuts (See 'About')
· Option to change bubbles notifications behavior ('None', 'only an empty bubble', 'a bubble with items count')
· Option to hide all buttons
· Display messages count inside the popup menu (previous button)
· Other minor features & fixed bugs