Review for Extra Folder Columns by ff_addons_
Rated 5 out of 5 stars
@Ed
you have to go to yourprofile\extensions\extra-cols@jminta_gmail.com\chrome\content there you find the main.js. Open it with an texteditor an search:
switch (aColName) {
case “folderNameCol”:
Then delete the three lines wich starts with - in front of them. After that insert the lines with the + ...
Don´t forget to save the file an then start Thunderbird.
To create your own collections, you must have a Mozilla Add-ons account.