Hi there!
Some things have already been merged to master (see https://github.com/sharetribe/sharetribe/pull/3318) and others are in progress (see https://github.com/sharetribe/sharetribe/pull/3327 or https://github.com/sharetribe/sharetribe/pull/3318) and will be merged early next week.
It’s true that the term “newsletter” was confusing. In Sharetribe Go, newsletters are automatic daily/weekly emails sent to members about new listings. They are not newsletter with additional content from admins. In that sense, newsletter are part of the service (and members can choose their frequency or unsubscribe).
However email from admins are unique and not controlled in any way.
Does it clarify things, @Marco?