good, but needs a few more features to be useable Rated 3 out of 5 stars
really needs to have most recent messages on top of the threads not on the bottom which requires looking more to read them. good idea, but not quite ready for everyday use. too frustrating. If you want to check out a program that does threading very well, look at Postbox email client.This review is for a previous version of the add-on (2.7).