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If Mail Merge is not yet translated into your own language and if you are familiar with both Thunderbird and Mail Merge, then please contact me by email: There is no money involved, but an honorable mention in the "Hall of Fame" a.k.a. Call for Help with the Translations: Mail Merge is already fully translated into some languages (English, German, Czech, French, Hungarian, Italian, Dutch and Polish). This change is caused by the new "pills" in Thunderbird 78. See: Changelog - Variable(s) in the To field in Thunderbird 78 / 91 / 102: You must hit "Enter" or "Tab" once you have added the variable(s) in the To field. See: Changelog - Attachments in Thunderbird 102: There is an important change in the way (individual) attachments are specified in the Mail Merge Dialog. Most of the code has been ported from a MailExtension "Experiment" to a "Pure" MailExtension.
#Thunderbird 2 update
Thunderbird 91: Mail Merge 8.4.0 is fully compatible with Thunderbird 91! - Thunderbird 102: (Recommended) Mail Merge 9.3.0 is fully compatible with Thunderbird 102! - IMPORTANT: Mail Merge 9.0.0 is a major update from the previous version 8.4.0.
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