Mail Summaries is a Thunderbird extension that will replace the empty folder preview and account central pane with a very nice summary of an entire account/folder.
Mail Summaries is an open source add-on designed to work with Mozilla Thunderbird 5.0 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".
· Mozilla Thunderbird
What's New in This Release: [ read full changelog ]
· Fix an issue with deleting messages while the folder summary is loaded.