Write your message. Set the moment. Cast it into the sea.
Send this link to your person. They'll see the bottle bobbing on dark water with a countdown. When the moment arrives, they tap it and the message unfurls. One time only.
💡 Heads up: The bottle waits on the website — not on their device — so they won't get a notification when it's time. A little nudge close to the open moment ("your bottle's almost ready") keeps it from drifting past them.