A time capsule, in a single email.

Time capsules used to be physical: a box of newspaper clippings, a child's drawing, a scribbled note, buried in a backyard or sealed in the cornerstone of a building. Someone had to remember they were there. Decades later, someone else had to dig them up. Most never got opened.

TimeCapsule is the same idea, scaled to a single email. You write what you'd want a future version of you to read. We seal it — encrypted, untouchable — until the day you chose. On that day, it lands in your inbox. No backyard. No cornerstone. No forgetting.

What goes in a time capsule letter is up to you. People write down what their world looks like right now: songs they're listening to, neighbours they know, the weather, the news, the small details they think they'll forget. Others write the kind of thing that doesn't change — values, hopes, promises, an apology, a thank-you they never sent.

Whatever you put in, you'll be the only one who reads it. We can't see inside, no analytics service will ever touch the contents. Your letter stays encrypted in our database until the day it leaves to find you.