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  • 1 reply
  • 1 has this problem
  • Last reply by sfhowes

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Why is it most add-ons are for the older versions on Thunderbird. I have 91.0 and would like to use the card book add-on.

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Install Cardbook 70.9:

Drag the Download Now button and drop it onto Tools/Add-ons & Themes in TB.


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