FolderCheck is a Thunderbird extension that enables users to check for messages in multiple folders.
FolderCheck is an add-on designed to work with the Mozilla Thunderbird 1.5 - 2.0.0.* versions.
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".
- This is the first version so far, but plans for the next include a window allowing you to mass-select folders to be checked.