So there is 3 ways, but 0 programs
One; Your lucky and the email starts with the ign and finish by @Gmail.com or something like this
OR, you use a database lookup
OR you use twitter, find the owner of the account, ask for a password recovery and twitter will show you a page with the email followed by some *** so you can still guess the email
btw your fucked if it's for og and semi og names