This post is an excerpt from Educational Technology Guy: FaxZero - free internet faxing.
FaxZero is a service that allows you to send a free fax, anywhere in the US or Canada, from your computer.
You simply enter your info and the recipient's and then upload a file (.DOC, .DOCX, or PDF). The service then sends you a confirmation email. Click on the link and it will send your fax. You will get another email when the fax has gone through successfully (or failed).
