Rated 4 out of 5 stars

Lovely Add-On. However does not work with Thunderbird 3 :-( The error console always shows the same error message (with different line numbers):
"Error: gBrowser is not defined
Source File: chrome://grabanddrag/content/grabanddrag.js
Line: 659"

This review is for a previous version of the add-on (2.7.6.1-signed).