Future Me - Send an email to your future self
Coinbase - Bitcoin, safe and easy.
Dabble Me - Your own private place to write. A journal/diary to help you remember what's happened in your life.
Binance - Cryptocurrencies exchange platform
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.
Poloniex - US-based cryptocurrency exchange with maximum security