Rated 5 out of 5 stars

I've 5 email accounts in Thunderbird, and several subfolders for archiving, and this Add-on has made managing that so much simpler. It's relatively easy to setup, and makes writing an email, while referring to other emails, and then archiving, it a much easier process. As soon as I'm out of my debt crisis, I need to send the developers some money. They deserve it.

This review is for a previous version of the add-on (4.0.3). 

Thanks for your kind words - don't forget you can get a "pro" license to support the project even better - this adds even more handy features such as unlimited folder icons, quickMove shortcuts and the new "reading list" (planned for 4.1) - test drive the feature by installing from our beta channel.