I seem to be having an issue, I accidentally logged into Xbox 360 SmartGlass with a different email account , now I can't find a way to logout .I want to be able to login with my actual account , I just don't know how.
Whether you are using a tablet or phone, SmartGlass should be using the Windows account that you are logged into on that device. On the phone, it's the default account you setup your phone with. On a tablet, your PC account should be the same email as the one you are using on your Xbox. As long as they match, everything should work.
If I've assumed some things wrong here, give me the details of what you're trying to do.