Review for Mailbox Alert by LindseyXZ
Rated 4 out of 5 stars
If you could add an option to change the colors and possibly make an option for transparency, this add on would be a lot more visually appealing to the eyes than just having notifications pop up as simple white box.
This review is for a previous version of the add-on (0.16.3).To create your own collections, you must have a Mozilla Add-ons account.