New Year's letter to your future self (example)

Write Self prints your letter on heavy paper, seals it in an envelope, and posts it to you on the date you choose — anywhere from six months from now to five years from now. Most people pick one year.

We don't send emails. We don't push notifications. We don't keep your letter on a screen. The only place your letter exists, after you write it, is encrypted in a database — and then, on the morning you chose, in your hand.