Welcome to Thunderbird Add-ons.
Add extra features and styles to make Thunderbird your own.Close
Thousands and Thousands of Duplicates Rated 3 out of 5 stars
I'm giving this 3 stars because when it works, it works brilliantly. But this is generous, because the duplicate contact problem not only gums up the address book, it brings Thunderbird and my whole computer to its knees.This review is for a previous version of the add-on (0.6.40).