No, notarization is not required for a mortgage gift letter. The letter should include key details about the donor, the buyer, and the gift amount, including: Donor's name, address, and relationship to the buyer. Buyer's name.
Most gifted deposit letters will require the following: The name of the receiver of the gifted deposit. The source of your gifted deposit. The relationship between you and the donor/s. The value of the gifted deposit. That the donor expects no repayment. That the donor makes no claim to the property.