Sending a fax by email is the same as sending an email.
It is easier than mailing, because even when you wanted to send an attached file by email, you still had to write a message body.
When sending a fax by email, you simply attach the document you want to send and, without writing a message body, enter the fax number instead of an email address in the recipient field.
These technological conveniences save you time, lower your costs, and let you enjoy your coffee for longer.