Sort and Search Customization Dialogs is an extension for Firefox, Thunderbird and SeaMonkey.
The buttons in (any) toolbar customization dialog are sorted by the button names. Also a search box was added to the dialog, so buttons can be filted by their names.
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".
- Internal cleanups to remove message in error console