Hi everyone! I created a Nurturing program with a single stream that sends emails twice a week; it contains a triggered smart campaign that adds leads to the stream. By the time of the 1st cast, it added 400+ leads, and today there are more than 700 leads. However, I see that the 1st email of the stream had been sent to only 4 leads, and the 2nd one to 2 leads (while the number of members was more like several hundreds by those dates). Why are the emails not being sent to all program members? I'm just learning to use Engagement programs, so I think I could have missed something important. Thanks in advance for any clue!