Welcome to Firefox for Android Add-ons.
Add extra features and styles to make Firefox for Android your own.
CloseReview for Mark All Read Button by William
Rated 1 out of 5 stars
I hoped this extension would mark read EVERY messages in every folder in every accounts! This way it is the same as right-clicking on a folder and choosing "Mark the folder as unread".
I don't see the usefulness of this extension this way, because it just replaces the right click.
To create your own collections, you must have a Mozilla Add-ons account.