Depends on what phone your friend has really. As the lads have said the iPhone doesn’t do the whole MMS thing. Not a big deal in any way shape or form as far as I’m concerned. If your friend has a phone with email on it you can send it to that.
If the phone is under a verizon plan, you can send an email with the attachment to phonenumber@vzwpix.com (replace “phonenumber” with the phone number, of course).