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how do I stop the adding of all email addresses received in a message to my address book?

lofce

When I receive an email, all the addresses in the incoming email are added to my address book. As a result I get email addresses added of people I don't even know. I want to stop that.

When I receive an email, all the addresses in the incoming email are added to my address book. As a result I get email addresses added of people I don't even know. I want to stop that.

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said

When I receive an email, all the addresses in the incoming email are added to my address book.

This feature doesn't exist in Thunderbird's default settings. Probably you are confusing it with the following default setting in Settings > Composition > Addressing > ✓ Automatically add outgoing email addresses to my : Collected Addresses (see image)

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