Review for Gmail Manager by Peter van den Broek
Rated 2 out of 5 stars
Firefox 3.6 starts up 3 times as slow with gmail manager. I also don't like how a box with unread messages doesn't come to the front anymore.
(having an icon for every mailbox is ugly and messy)
Have been using it since around 2.0, but it's time for an other gmail plugin, it seems.
To create your own collections, you must have a Mozilla Add-ons account.