Future Me - Send an email to your future self
Handwrytten - Handwritten notes straight from your device. Huge selection of cards or design your own. Handwriting service integrates with 1000's of apps.
Letter to Yourself - Send a physical letter to your future self
Handwriting.io - Real handwriting without the pen – no robots, all software
Postpone Pixel - Send a photo to yourself or a friend in the future
Letter from You - Handwritten letter, mailed for you in the future.