Timehop - Your digital life history
Future Me - Send an email to your future self
PastBook - PastBook is an online service that allows you to create your own beautiful photobooks and share them with friends and family.
Letter to Yourself - Send a physical letter to your future self
StoryWorth Holiday Gift - A year of family stories bound in a keepsake book.
Letter to my future self - Letter to my future self is a prominent email scheduling service that gives you the opportunity to create a letter with goals and thoughts for your future self and schedule a date for sending it.