They went on to say they could do email. Well, isn't a newsletter like a fancier email? With photos?
What do you mean by "not quite?"
And "the boys" ~ our two English mastiffs, who receive a lot more comments on Facebook than I ever do. They have to be there if I want anyone to read it.
What I'm saying here is that I think people like photos better than an author nattering about themselves. Unless you're a Pulitzer Prize-winner. Then you can natter.
I can mention speaking engagements, book signing events, and book club appearances. Especially for those who are near me. But there needs to be (I think) information about where they can get my books, find my website, and follow me on Social Media, too.
And to me, the cardinal rule is: Keep it short and sweet.