You don't need a fax machine or phone line to send a fax. The best online fax services allow you to send and receive faxes via your email address, a mobile app, or a web portal—and sometimes for free.

I'm sorry if this doesn't belong here but I figure modems are going to be involved so this seemed like the right place to start. Anyhow, my office receives hundreds of faxes a day and sorting and ...