Welcome to Thunderbird Add-ons.
Add extra features and styles to make Thunderbird your own.Close
To create your own collections, you must have a Mozilla Add-ons account.
What are daily users?
Add-ons downloaded from this site check for updates once per day. The total number of these update pings is known as Active Daily Users. Daily users can be broken down by add-on version, operating system, add-on status, application, and locale.