Hello Michael,
Thank you very much for your support. I can understand the spam problem. However, as you say yourself, there may be configurations where it makes sense to send in small batches. It would be great if you could do something about it.
I also had the idea of duplicating the newsletter. But there's a catch, too. If Newsletter A is sent at 10:00 and 12:00 and Newsletter B at 14:00 and 15:00, then Newsletter B doesn't recognize which posts Newsletter A has already sent and vice versa. You could work with different categories, but that makes things more complicated on the user side. But for now, thank you very much!
Best regards
Andreas