I have found sending faxes are more reliable than emails or the regular mail. It is not only faster but you know it will get to where you are sending it to. I have needed this service many times and SR Fax has been the service I use. It is so easy to use, inexpensive, and very reliable. They tell you when your document has been received which you do need to know. Looking for a really good fax service, SR Fax is the best and deserves the 5 star rating,