I've recently had to take advantage of Axigen's technical support services.
Their response was rapid and the replies I received were detailed; and while I hope I don't have to call on them too often, I was impressed so I will not be dreading it if I do.
Axigen runs 24x7 without fault and if you need configuration help their tech support is 24x7.
This means we've reduced our man hours to support our hosted email platform by around 90%.
Before Axigen, [...] when issues arose, we would spend valuable time searching for answers on the Internet.
The support we get from Axigen is the best we have experienced in the software business.