La. Civ. Code art. 1938
Current with operative changes from the 2024 Third Special Legislative Session
A written revocation, rejection, or acceptance is received when it comes into the possession of the addressee or of a person authorized by him to receive it, or when it is deposited in a place the addressee has indicated as the place for this or similar communications to be deposited for him.
La. C.C. § 1938