Welcome to Firefox for Android Add-ons.
Add extra features and styles to make Firefox for Android your own.
CloseReview for FolderCheck by Johan Beronius
Rated 3 out of 5 stars
Just a comment, not a review.
There is also this setting in "user.js" if you have to many folders to check.
user_pref("mail.check_all_imap_folders_for_new", true);
To create your own collections, you must have a Mozilla Add-ons account.