Well, my TB is Hebrew version. I need the Hebrew version not for reading the menus, but to be able to reply or compose messages from Right to Left. Would the English version enable it, I'd use it. Apparently the Hebrew version works differently from the English version. Possibly, the translation of the menu options into Hebrew is incorrect, though I have the impression that some menu option are actually different in the Hebrew version. What was marked on my TB was (I'm translating back to English) Tools -> Options -> Composing: Automatic addresses completion, when addressing messages, search for compliant records in: Local address books. Now I ticked it off, though it doesn't make much sense. We'll see if it works. Anyhow, in my version, there is no option to mark, or unmark, concerning "target for outgoing addresses". Also, my TB is/was collecting automatically email addresses from all incoming emails.

Yes, my version is 24.4.0. The option for outgoing messages was unchecked, yet TB still collects incoming email addresses. I'll install the English version over the present one and use the BiDi add on. Yet, TB people may want to look at the peculiar behavior of the Hebrew Version.

Could it be your clicking on show remote content and selecting "show remote content for this sender"? Hence adding the sender to your address book with the show remote content flag set and blaming Thunderbird for collecting the addresses?

Thank you. Is it possible to flag "show remote content for this sender" without the sender's email address being added automatically to my AB?

It complicates things. I wish there would be a simpler, or more convenient way. For instance, if the default action would be to add the sender email address to the Collected Addresses.

I would suggest a left field view. Let the PAB be the remote image list, and create another say "Joshua Address book" and put your personal contact there.