how do you fax from an iMac

Hi,

First of all, a landline telephone connection is needed.

According to the article provided by kaz-k:

"If you’ve used a fax modem in the past with your Mac, you may be able to continue using it to send and receive faxes by installing third-party fax software."

If this is not possible, would you or a friend have access to an older Macintosh or Windows computer with a built-in or external fax modem? Alternatively, if absolutely necessary, you may be able to find an inexpensive fax machine at a thrift shop or via an Internet site for local second-hand items.

Hi,

FAX modem for Mac is available, though it doesn't work on Sierra or later macOSs.

If you have a multifunction printer connected to your Mac, it could be possible to send FAX from your iMac.

Set up a multifunction printer to send faxes on Mac – Apple Support (AU)

There are apps and Web sites that will let you send and receive faxes. I'm not familiar with them, but if you. do a Google search for "web fax service Mac", several pop up.

Basically the app or Web site is a front-end to someone else's fax machine.

Note that faxes are an old way of electronically sending documents.

These days, in many cases, "printing" to a .PDF file and e-mailing the .PDF file produces better results.