That's good to know you knew what you were doing! However the product also didn't appear to expose any of the control we needed to have a good email setup. Maybe this is because we weren't paying enough (mentioned in another reply), but we were also never directed to pay more despite asking for this sort of control.
>>danpal+(OP)
That is true. There's a lot of magic that goes into parsing the emails. But end user configuration of the infrastructure of sending didn't really exist when I was there