I think if crafted well a newsletter is important. Bottom line is that having an email address is the only sure way to keep contact with someone in today’s digital age.
True, I also have a bunch of newsletters that I don’t read. I think it’s partially because i don’t have time. It’s partially because it’s just done poorly or it’s boring.
Whatever it is if you have something thats unique then you stand a chance. Same goes for a newsletter or similar.