Hello,
we never considered adding a hourly dispatch time to Automated, since it will possibly lead to spam issues on large lists (every time a new post is found, a new newsletter would be sent to ALL subscribers). However we get that in certain scenarios it could be useful. I’ll pass this to our developers, we will discuss whether to add this option in one of the futures Newsletter releases.
In the meantime, there is a trick to easily do this: duplicate the current Automated, and edit the sending times accordingly, so that the first Automated goes out at say, 9am and 2pm, and the second at 11am and 5pm: this way you’ll have 4 checks a day.
Michael