If you forget sign-in information while QB online login then there are a few ways to sign in with just one piece of information, like your email, phone number, or user ID. Your user ID is basically an email address. If you enter the email address associated with your QuickBooks account, Intuit will be sending a one-time code to that email to access your account. If you forgot which email you used, try entering your phone number. Intuit will text you a one-time code to access your account.