I use interfax.net I simply add the fax number as an email in the BCC field in the wppizza settings. Once an order is placed Interfax will fax over the order to the store fax.

Just make sure you can also receive emails on a tablet or smartphone or whatever. Sometimes faxes are out of paper or jammed, or there might be a phone outage in the area and you never know if an order came through.

I hired a developer to create a call confirmation plugin as only the store owner receives the emails on his phone. Once an order is placed it makes a call to the shop so they know an online order was placed and tells them to go and check the fax machine.

Yea. Interfax doesn’t require an attachment, but it does require an authorized FROM sender that you specify in your Interfax account profile. Simply set the authorized sender in the FROM field in wppizza and you’re good to go.