Treasure Mail

If anyone else is familiar with it, there is a message that pops up on the game menu saying "Your troops have uncovered a hidden mine with gold in it, check your email to claim your gold!".

Short and Sweet, I never get this Email, I don't know maybe it's a hoax? It wouldn't be like a free game company to hand out Premium/Gold, I've changed the e-mail in the box multiple times and tried it on many different wifi connections, but there is never an e-mail to claim my "Prize".

Anyone else ever had this problem? solutions? Comments?

Thanks in advance for any responses.

P.S I did as bets I could with the picture attachment. Didn't want to give away E-mail.