Review for [Un]read by Sandy Sanderson
Rated 2 out of 5 stars
This can be a very handy add-ons. Unfortunately, when change back from "view unread" to "view all", it automatically returns to the earliest email, instead of the last, as that is the logical place to be. It is annoying having to scroll back each time using this feature.
To create your own collections, you must have a Mozilla Add-ons account.