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Avaliado em 5 de 5 estrelas
The extension works for me on macOS 11.7.4 and Thunderbird 102.8.0. However, I had to uninstall and reinstall the extension twice (including restarts of Thunderbird) before it actually worked. After the final reinstall I got to see an "Add-on Options" icon (a spanner) in the Add-ons Manager that was not there when the extension did not work.
Esta análise é para uma versão anterior da extensão (3.8.10).the spanner/wrench problem is actually a TB problem (not addon), as I learned a few days ago from TB developers.
Another workaround is to close the addon tab and to reopen it. Then, the wrench comes up as well.
Para criar as suas próprias coleções, você deve ter uma conta no Mozilla Add-ons.