E fax has a option where they will bill you annually for their fax service,will they have a 30 fax per month limit but if you don't use your fax service all the time the balance does not roll over so if send a fax that has more than 30 pages they will charge you a additional $10.00 I just paid my annual fee and then send a fax that was about 20 pages but they charged me for going over my limit and I hadn't used the fax service that month then after I complained about the sur charge they charged me another $10.00 so I cancelled my subscription Don't use this service they're a bunch of hustlers trying to steal your hard earned money.