Received an email from the branch Presidency - it included a picture for proof that he's still alive and said:

Dear Families, May you know that your missionary is alive and well and very happy this Christmas season as they serve the Lord. As their branch presidency, know that we are well pleased with every Sister and Elder whom we serve. May the Lord’s choicest blessings be with you and yours this day and know of all our love for all of you."