Review for FolderFlags by pgl
Rated 5 out of 5 stars
If you ever check your mails from multiple accounts or locations, they can get confused as to which folder is your Drafts folder exactly (some like to keep it under Inbox, some separately, for example). This addon is essential for sorting out these issues.
This review is for a previous version of the add-on (1.0).To create your own collections, you must have a Mozilla Add-ons account.