There have been many discussions about this over the years, for Manila specifically. I always suggest sending certified copies, but there have been many that have been approved with emailed printouts. The potential for delays for taking the easy route are not worth it. I remember a particular post where a regular copy was presented and initially refused, but after discussion with a superior, it was accepted.
I did not mean for my comment to discourage sending certified copies. I was just commenting on what I have read from other posters over the years, specifically about Manila. I sent certified copies and encourage everyone to do that.