Used TBExtInt for Windows?
The Download Now link will prompt a local download of the Firefox extension. To install the extension directly, open the file using your Firefox browser.
Editors’ Review
Download.com staff
Top Recommended Alternative
Pros
- Installs Thunderbird extensions directly from the Firefox browser
- Eliminates the need to first save extension files
- Works with both Firefox and Thunderbird applications
Cons
- Requires installation on both Firefox and Thunderbird
