If I subsequently update my email address/mobile number with Singpass, do I have to inform CPF Board?
Subsequent updates to your Singpass mobile number and email address will not be automatically updated with the Board.
You can update your mobile number and/or email address via my cpf Online Services - My Notifications with your Singpass. For convenience, we will retrieve and auto-fill the online form with the contact details from your MyInfo profile with Singpass. An SMS or email One-Time PIN (OTP) will be sent to your new mobile number or email address for verification before the changes take effect.