Watch Letter to Santa 3 (2017) HD Full Movie Free on SolarMovie. Watch Letter to Santa 3 (2017) online free. A group of individuals come to experience magical moments over the course of one day. Full of the po...A group of individuals come to experience magical moments over the course of one day. Full of the power of family, love, and the spirit of forgiveness. Each individual comes to realize that Christmas, more than any other time of the year, is full of wonder and surprises.