Rated 5 out of 5 stars
Losing the use of "Custom Address Sidebar" due to Mozilla / Thunderbird's update was a disheartening letdown. Although other Add-ons were similarly lost after the update, Custom Address Sidebar was truly one of my favorites, and a value added productivity enhancement. I am genuinely grateful that it was freely given to the Thunderbird community, and hope that it's author considers updating / salvaging it, if possible, given the new add-on limitations of TB.
PLEASE NOTE: While we all know that along with adults that use and depend on Thunderbird, children, some very young, and possibly immature, have been given permission by their parents to use it as well. PLEASE, parents, if you read this review, teach your children who (cough) possibly through no fault of your own, have grown up with a sense of entitlement, believing that everyone owes them, everything, when they want it, how they want it, free, and NOW! OR ELSE! Please inform them that this developer picked up the ball when the original developer of it's now defunct predecessor dropped that ball. This great add-on was created to fill that void, and given to this community, asking nothing in return for that good deed. That's right, you and your children have been using it for free. Now kids, come on, we both know that you know what free is, and that you expect everything to be given to you that way, because, well, just because you are you. It was sort of a present, and it was given to you without even a hint of the guilt trip your mommy and daddy are going to lay on you when you are still living at home, leeching off them in your 20's and 30's. So, try to be big boys and girls, and learn the following lesson. Leaving 1 star reviews is a GREAT way to make sure that this nice developer never works on this add-on again. It offers them no encouragement or reason to do so. In simple terms that even a child can understand... 1 star tantrums are a no no.