QuickBooks not accepting the password while you use your email? In the recent few days, this error has been reported by many QuickBooks users. It is basically that the QuickBooks desktop doesn’t accept the password, when you uses the email services like the Gmail, Outlook or Yahoo Mail. You might not be able to connect to the online email services and send transactions directly from the QuickBooks desktop. Many times, this error might appear on the screen saying “Incorrect email or password”. Well need to worry, as there can be certain things that can block the messages going out to the customers and vendors.