forgot the email for my main account

Hi i wanted to comeback to play with some friends but i just remember the id,password and email of this secondary account, i need the email on my main account i remember the id and password but unfortunaly when i log in the game say that i need to put the autenthicator code and sent the code on my email but i dont remember the email can you please help me find it please ? it was a retri pala with 5700 gearscore if im not wrong i also have it on my friendlist with my secondary account please help me