To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
CloseWelcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.
CloseReview for Expression Search / GMailUI by Firefox user 01abef
Rated 5 out of 5 stars
Great add-on. Makes a world of difference in email searching. Please, please, pretty please update the add-on to be compatible with Thunderbird 68+
To create your own collections, you must have a Mozilla Add-ons account.