I want to have 1 newsletter like an catch-all. So everyone subscribed to this newsletter will just get everything.
But then I got topic-specific newsletters. And people should only get the post related to this topic.
When I send a post I can only choose one newsletter?
Is there a way of accomplishing my goal? Maybe I missed something.
I’m not aware of a way (at least not through the ghost admin panel) to send to multiple newsletters at once. I 100% agree it’d be a useful feature. You might make a post in the Ideas forum, explaining how it’d be useful. (And I’ll come vote for it!)