I don't know my email because I haven't had to use it in years. Now I'm suddenly expected to remember it. I know my account name and password but I need my email to log in, how can I solve this?
I had this same problem awhile back. Your best bet is to contact Mojang at their contact section and explain that you do not have access to the email that you originally signed up with (or in this case, explain that you don't know which email you used) . They will most likely ask you for proof of purchase associated with the account name. They can then set the email for your username to one that you would like.