You posted in the Firefox support fora queue. Firefox doesn't do email, it's strictly a web browser.

If you are using Firefox to access your mail, you are using "web-mail" such as Yahoo!Mail or Gmail. You need to seek support from your service provider or a forum for that service.

If your problem is with Thunderbird, let us know and we can move this thread to the Thunderbird support queue.

https://support.mozilla.org/en-US/kb/problems-with-email-how-to-find-help

Please move this thread to the Thunderbird support group. Thank you

You could insert a link (Ctrl+K) like this:

Unsubscribe to this list

so the recipient would send a message to you with Unsubscribe as the Subject. A message filter that acts on messages with this Subject would move them to a separate folder or Tag them.

Thank you for your help

How can we put this message filter?? Please be detailed...

Thank you very much!!

vigla said

How can we put this message filter?? Please be detailed... Thank you very much!!

Starting from Tools/Message Filters, you could create a filter that looks like the one in the attached picture.

http://kb.mozillazine.org/Filters_(Thunderbird)