Context: I created an email waterfall last week and deemed that DropContact was the best provider for the profile of person I was searching for. It returned @nyc.gov email addresses and these were validated with ZeroBounce. Today I tried to extend that same waterfall to more people and received invalidated emails for every single person (DropContact was returning @school.nyc.gov email addresses and all were invalidated by ZeroBounce. I tried to re-run the waterfall for people that were successful previously and this time I received invalid results and @schools.nyc.gov email addresses. Why am I getting new, invalidated results when using DropContact? It was successful before but it's seemingly failing now
