Originally Posted by
choefman
T.38 faxing (Fax over IP) is highly unreliable. I used several different fax services of the years and although I agree with previous posters that J2 (efax.com) is fairly expensive, their service is very reliable!
But send2fax.com is half the price of J2 premier, so given a choice between the two I'd go send2fax.com because you get in at around 10 bucks a month and they provide real hand-written responses to customer care queries.