Actually, you can send faxes through magicJack, but a few settings need to be adjusted prior to this process. Connect the fax to the Input jack on your fax machine. After this process, turn off the error connection on your fax machine and set the machine to the lowest possible transmission speed. If you have no idea on how to do it, consult the user guide of the Fax machine and then you should be able to send faxes.