Future Me - Send an email to your future self
Slackmojis - A directory of the best custom slack emojis
Letter to Yourself - Send a physical letter to your future self
Discord Emoji - Iconfinder, but for emoji.
Letterflix - Send letters and snail mail online to the USA, Europe, India, or anywhere in the world. Letterflix is the easiest and secure way to send letters and snail mail anywhere in the world from the comfort of your home.
Emoji Builder - Create your own emoji in no time 💨