You can go back to the school that you recieved your diploma from and get a new copy. If the school has closed down then go to the department of education in that would have taken care of that school. Most educational institutes will not email this kind of information. Now, if you cannot physically go to the school, call them and see see if they will mail it to you. You can ask if they will email it, it never hurts to ask. However, you will find that they will probably even be hesitant on snail mailing it to you. This is due to the increased risk of identity theft.