Review for Show InOut by Adamski_NZ
Rated 5 out of 5 stars
Super little add-on. I must admit, my filters sometimes go a bit barking mad and copy "sent" messages to regular folders. This extn is a godsend :)
This review is for a previous version of the add-on (0.6.1).To create your own collections, you must have a Mozilla Add-ons account.