If you can't get TB to ask you permission to access the Mac OS X Address book. I believe they will wind up in a separate address book folder in TB. txt), or CSV comma separated variables (.csv) natively. TB can Import vCards (.vcf format), or text lists of contacts in LDIF (.ldif or. Select the Address Books radio button and click the Next Button. Then go to TB and under the Tools Menu select Import. Why not go into your Contacts app - and export all of them as a list (tab delimited, or CSV comma separated variables) - or as a folder full of vCards (.vcf)? Re '':I can also confirm that there are no Thunderbird-related entries in System Preferences > Security & Privacy > Privacy > Contacts, which means that macOS is not automating the requests. I wonder if the developers of Thunderbird were aware of the change to the app permission rules that started with Mojave? It appears that in Mojave and later releases, Thunderbird has to ask me for permission before accessing the data in Contacts, and I can’t whitelist Thunderbird in the Contacts section of the Privacy settings until Thunderbird asks me first, which it isn’t. Unfortunately, it didn’t work, and then I came across the article above (I'm not perfect at computers) I believe there is a check box where you have to allow 'Thunderbird' to have access to 'Contacts'. You'll see a few Apps and System Functions where you can allow other apps to access them. System Preferences > Security & Privacy > Privacy You need to set a security setting on OSX that has to be set to allow the address book to be used. Is it possible to add an app to the list using the + Having selected “Use Mac OS X Address Book”, try restarting Thunderbird to see if makes the request and then access the System Preferences to allow Thunderbird.

Re :I can also confirm that there are no Thunderbird-related entries in System Preferences > Security & Privacy > Privacy > Contacts, which means that macOS is not automating the requests.

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