Can I use my All in One Machine ?

The all in one machines (fax, print, scan, etc.) are not fax modems, they do not have a fax modem that snappy fax can use for sending and receiving faxes, they are standalone fax machines. You will need a regular fax modem to send and receive faxes with snappy fax.

The only exception we have found to this is the Brother All in One machines. They install a com port but not necessarily a 'modem' that will show in the modems applet in control panel. Some Brother fax machines do, in fact, have a fax modem which can be used to send faxes but they cannot, however, be used to receive faxes into snappy fax.