Welcome to Thunderbird Add-ons.
Add extra features and styles to make Thunderbird your own.Close
About this Add-on
Those 3 buttons are integrated into the Thunderbird's quick filter bar. If this bar is not yet displayed, you just have to activate it by clicking on the top "Quick Filter" button or in "View / Toolbars / Quick Filter Bar".
You may use pin button to keep filters applied when switching to your other inbox/folders.