Using the campaignmonitor GUI it is possible to choose which lists and segments that a newsletter should be sent to. The GUI informs how many subscribers that the segments consist of.
This seems impossible using the current API.
We really need a method of doing so. An overload to the method
Subscribers.GetActive(apiKey, listID, addedAfter) where you can specify the segment would be great.
Did you ever find a way to do this?
This is something I currently need for a project. A Segment.GetStats would be incredibly useful.