I read this article: https://support.mozilla.org/en-US/kb/how-create-and-use-mailing-lists-thunderbird Almost, what I need… Not quite though. I've had a spike of people signing up to my email list, when I 1st started capturing emails… It was very slow, maybe I would get 1-2 sign-ups a week. What I've done, was created a filter… Now, when I get an email notification… Those sign-ups go into this filter, a.k.a. folder… I was wondering if there was a way to auto-magically put these newly sign-ups into an email list? I created an email list, in my personal address book… Would be nice when these sign-ups arrived in this filter folder, that they would auto populate the email list. Thank you in advance, for taking the time to read this. Rob