Believe it or not, faxes are still a thing. And if you're dealing with mortgage paperwork or handling a legal matter, you might find yourself sending lots of them. InterFAX makes it as easy as sending an email.
You don't need to download anything, you just sign up for their service, then send your "fax" as an email by adding the following in the "to" field: [country code][area code][fax number]@fax.tc.
It does cost money, though. They don't have monthly fees. Instead, they charge by the page, but you have to sign up for a prepaid package. Their cheapest of these packages is $US10, and at that price, your faxes will cost $US0.11 per page. If you send faxes frequently, it might be worth dropping the money for a $US10 prepaid account.
After linking your email account, all you have to do is attach your docs to the email, then plug in the number. If there are no attachments, they will just send what's in the body of your email. You can check it out at the link below.