It’s every couple of months that someone at my job comes along and says hey give me access to this data because my team is building their own marketing email tool. I always ask them who they know at google so that they can call and get unbanned from gmail. So far no one ever has an answer…email is tough and people need to be very careful when they try to do it at scale. That’s not to say that projects like this aren’t great. They are. But enterprise scale email is very complicated especially in regulated industries like finance and healthcare.