The Branch Manager,
Most respectfully, I am __________(Your Name) and I am holding account number __________ (Mention your account number) in your bank __________(Name of the Bank) and my branch is __________(Bank Branch).
This email is in reference to the Overdraft facility. I would most humbly inform you that I am willing to avail the Overdraft facility from your bank in my name. I am hereby stating that I am ready to proceed with all required formalities and do all required paperwork.
In this regard, I request you to kindly guide me with the procedure and do the needful at the earliest. Looking forward to hearing from you regarding my request.
Thankful as always,
[Digital Signature]
____________ (Signature)
____________ (Name),
____________ (Contact details)