Wave X - Share emotions in one gesture
Letter to Yourself - Send a physical letter to your future self
Knoto - Send photos to friends automatically using face recognition
Future Me - Send an email to your future self
Postpone Pixel - Send a photo to yourself or a friend in the future
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.