BirdieSync

- a tool which proves doubloons in the books of address, events, stains and mails.

- un outil qui vérifie les doublons dans les carnets d'adresse, les évènements, les taches et les mails.

Good solution

2 tools to duplicates
First tool for duplicates adress : https://addons.mozilla.org/fr/thunderbird/addon/2505/
second tool for duplicates message : https://addons.mozilla.org/fr/thunderbird/addon/4654/

Good Luke

Hello Pascal,

BirdieSync has its own tool to remove duplicates (at least identical items):
In Thunderbird/Sunbird, menu "Tools/BirdieSync/Remove duplicates..."