Randomizing NPS messages

Thanks for the reply inespais. It seems with many efforts there are multiple ways and this may be making a square peg go into a round hold.  Braze does many things and I'm not sure this is one of them (yet!).

We've got a partial solution though limited in capability...though not super easy to find.

We went with a scheduled canvas and used the canvas entry limit of X (500 for us), per scheduled period (ours is daily), which I hadn't seen before--this allows a functional random selector when Entry Controls are applied.  

The canvas evaluates users each day at the same time and selects a random 500 to enter and then cannot re-enter (unless you wanted them to).  To increase impressions occurring we targeted a segment of users who've had a session in the last 4 weeks and are not "new" in the last 4 weeks. This could be changed for any specific requirements of who to target. In our case we can live with the built in bias of users already being "active" when they receive the NPS.

Fun side outcome is we've set this up to then pass the results to a webhook sending over to our CDP where anyone in the company can view/analyze.  I love when integrated systems just work!

Hope this help anyone trying something similar!