A gift letter must contain the donor's name, the gift's value, confirmation that the gift is not to be repaid, and the donor's signature. Org for our wire instructions.An individual gifted a sum of money to another person through a cheque or cash. Today's Date: Medi-Cal Access Program. A gift letter is an important, formal, legal piece of documentation that can help explain that a (usually rather large) sum of money was gifted to you.