Respected __________ ,
This email is in reference to the credit card that is being used by you bearing credit card number ______________ (mention credit card number).
I am writing this email in order to bring to your concern that I have got to know about the reward points that are being accumulated in my bank account i.e. _______________ (mention account number). This is to inform you that I am willing to redeem the said points.
I shall be obliged if you could guide me through the procedure in this regard.
[Digital Signature – if applicable]
____________ (Contact details)