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 Contact Tabs by machine
Rated 5 out of 5 stars
Please make this work for latest Thunderbird. (68+) I am running an old version until this can be updated. I also added my comment to this being standard in Thunderbird on Bugzilla forum.
This is not a case of making a tab in Thunderbird, but moving the tab from the taskbar to where it should be, in Thunderbird's tab bar.
5 stars when it works!
To create your own collections, you must have a Mozilla Add-ons account.