Besides the login email/phone, account recovery email/phone is the alternative method to receive verification code to reset your password. It can be very useful should you lose your phone or access to your login email. Visit Login & Security on HTC account website (account.htcvive.com), and then go to Recovery Method & 2-step Verification. Click Add next to Recovery method. Follow the instruction to complete the process. You will receive a verification email/short message afterward.