This document summarizes the work of More Love Letters, an organization that spreads love through handwritten letters. They collect letter requests and have volunteers write letters that are mailed to people around the world to brighten their day. Notable initiatives include "Love Letter Bundles" containing 10-100 letters, and encouraging communities to write love letters in public spaces to be discovered. The movement has spread love to over 47 countries through the power of writing and mailing letters by hand.