How to stop Thunderbird from collecting addresses?

[TE7]

Lucid 10.04...How do you stop Thunderbird from adding email addresses to the address book from all the newsletters I get? It is very annoying. Any input would be appreciated.

[TE7]

I found that if you choose to just "Show Remote Content" instead of "Always Load Remote Content" it won't collect the return email address of the newsletter in the Address Book.

[gabak]

Its possible to display all images from any sender, though its not recommended since malware can be embedded in images, and spammers will be able to verify your e-mail address. If you want to do this use the Config editor to toggle the preference mailnews.message_display.disable_remote_image to false

just double click and it will be false