To bind phone number to your account and enable SMS verification, you need to complete the verification via email first.
If you have no access to current registered email address: seek help from Alibaba.com Customer Service Team.
If you have access to your account:
1. Go to My Account, click Enter Mobile Number. and enter the phone number. Follow the guides to finish binding.
2. Complete Email verification as below
3. Enter the phone number you want to bind with, Request free verification code to complete phone verification.
Why cannot I receive the Email verification code?
Why cannot I receive the SMS verification code?