Write it. Feel it.Seal it. Become it.
A private digital time capsule for your thoughts, memories, letters, and future confessions. Write what matters today. Open it when the time is right.
“Some words are meant for tomorrow.”
Write a private letter to your future self or someone you love. Sealed safely in time until the day you choose to open it.
HOW IT WORKS
Four Simple Steps
From your thoughts to a sealed time capsule — in just a few clicks.
Write
Write what you don't want to forget.
Seal
Your message is encrypted before it leaves your device.
Wait
Time-lock it for a date that matters.
Unseal
When the moment arrives, your message becomes yours again.
BUILT FOR YOUR PRIVACY
Zero-Knowledge
Encryption
Your message is encrypted in your browser using AES-GCM-256 before it ever reaches our servers. We can't read it. No one can.
NOT EVEN
WE CAN READ IT
Echoes Unlocked from the Past
Real capsules sealed years ago whose timers have reached zero. Anonymous confessions, promises, and unedited memories decrypted for the world to witness.
“If you are reading this, I hope you finally quit that soul-crushing agency job and took a leap into building your own studio. Did you ever stop being afraid of failing?”
“Did we ever make it to Tokyo? Did we learn how to forgive Dad? I am writing this from my tiny dorm room with 200 bucks left in the account. Remember this hunger.”
“To whoever reads this in the future: I hope you learned to stop worrying about things you cannot control. The rain always stops eventually. Keep creating.”
ARCHIVED
Unsealed Memories
TIME LOCKED
Years, Not Minutes
OPEN ACCESS
Public Archive
Frequently Asked
Questions
Everything you need to know about zero-knowledge encryption, time-lock protocols, and cryptographic keys.
Read our technical whitepaper or reach out to our team directly.
Never. Your letters are encrypted locally in your web browser using client-side AES-GCM-256 before leaving your device. We only store encrypted ciphertext on the server; even if our database were breached, nobody could read your words without your key.
— A PLACE FOR WHAT MATTERS —
“Some words are worthwaiting for.”
Honest pricing. No subscriptions.
Unseal does not sell your personal data or run tracking ads. Our core delivery remains free, sustained by long-term milestone passes and community backing.
Standard Capsule
Perfect for sending encrypted thoughts and near-future reflections.
- Schedule delivery up to 2 years ahead
- Client-side AES-GCM-256 Zero-Knowledge encryption
- 1 file of each format (Image, Audio, Video, Doc)
- Deliver to future self or loved ones
- Zero ads & complete data privacy
Long-Term Vault Pass
Lock away milestone memories deep into your distant future.
- Extended scheduling: 3, 5 to 10+ years ahead
- Full media unlocked (5 Images, 3 Audios, 2 Videos, 5 Files)
- Automated scheduler infrastructure maintenance
- Immutable cryptographic time-lock guarantee
- No recurring annual charges or subscriptions
Secure payments · Zero recurring fees · Zero-Knowledge privacy