You can transfer up to 100,000 Marriott/SPG points a year to friends and family. This benefit is available between any two accounts in good standing whether sending or receiving points. There is a $10 transfer fee.
The authorization to transfer Points must be initiated by the member with the Points to be transferred. You execute the transfer by calling Member Support.
The account holder requesting the transfer must provide the Marriott Rewards account number of the Points recipient at the time of the Point transfer request.