Older thread, but I agree on the notification.

I have sent several faxes through the send fax gateway in my vpanel and have had 100% success every time. The times I have needed to send faxes, I had to speak to the person soon afterward anyway so I always found out within the next hour or so that it went through.

Once, I was on the phone with a company that needed a copy of my ID for something, which I had anticipated so I had already had it scanned into a PDF. When I receive the fax number from the CSR over the phone it just took a few seconds to type in the number and upload the PDF. I said "ok the fax is on the way" and the CSR said, "wow, yeah here it comes" LOL