Use Cases

Every reason to preserve

Nine documented use cases — and the truth is, the possibilities are unlimited. Even we can't predict every way people will use this.

01Personal

Letters to My Future Self

Write today. Read tomorrow.

Seal a letter to yourself at a meaningful milestone — graduation, a birthday, a new year. Open it years later and witness how far you've come.

  • Set a delivery date months or years ahead
  • Password-protect so only future-you can open it
  • Attach photos, voice notes, or video alongside the letter
02Privacy

Confession Capsule

The truth, on your terms.

Say what you've always wanted to say — with your name hidden from the recipient. The sender's identity stays concealed until the recipient chooses to unlock it.

  • Sender name hidden from recipient until unlock
  • Set a future date so you have time to reconsider
  • Self-destruct after first view removes content from our records
03Security

Dead Man's Switch

If you stop checking in, messages are released.

Schedule messages that only send if you stop responding. A digital safeguard for journalists, whistleblowers, or anyone who wants their truth told regardless.

  • Set a check-in interval — daily, weekly, monthly
  • Automatic email warning before release
  • Per-capsule check-in from your dashboard
04Legacy

Digital Will and Password Vault

Ensure what matters reaches who it should.

Securely store your most sensitive information — account credentials, final wishes, emergency contacts — and have it delivered only when the time comes.

  • Structured fields for accounts, passwords, and instructions
  • Delivered only on a future date or via Dead Man's Switch
  • Text content encrypted with AES-256 before leaving your device
05Whistleblower

Evidence Locker

Proof that exists, even if you can't speak.

Record a statement, document evidence, or capture a moment that needs to exist independently of you. Release it on a date, or trigger it automatically.

  • SHA-256 content hash generated at the moment of sealing
  • Platform-issued timestamp certificate — verifiable proof of when content was sealed
  • Pair with Dead Man's Switch for automatic release
06Analytics

Sender Analytics

Know when your message lands.

Track exactly when your capsule was opened, how many times it was viewed, and the full delivery timeline — all from your dashboard.

  • "Opened 2 hours after unlock" timestamp
  • View count and last-viewed time
  • Full delivery status timeline
07Experiential

Location-Based Unlock

Opens only when you arrive.

A capsule that reveals itself only when the recipient steps foot in the right place. Perfect for travel discoveries, milestone reveals, or any experience that is deeply tied to where you are.

  • Set a GPS coordinate and radius
  • Uses browser Geolocation for verification
  • Combine with a time-lock for dual-condition unlock
08Collaborative

Group Capsule

Many voices. One sealed moment.

Up to 20 contributors can add their own message, photo, or video to a single capsule. All contributions stay sealed until the unlock date — perfect for farewells, birthdays, and team moments.

  • Share a contribution link with anyone
  • All submissions sealed until unlock date
  • Sender sees all contributions listed on their dashboard
09Verification

Identity Verification — Real You

Prove it was really you.

Record yourself live — not an upload — with optional face verification. Establish that a message was created in real time, not fabricated after the fact.

  • Live-recording badge on delivery
  • Option for liveness detection
  • Pairs with notarization hash for full proof chain
And so much more

The use cases are unlimited.

We documented nine. But honestly, even we can't predict every way someone will use a tool that lets you send anything to any future moment. Every person who uses Preserve U creates a new use case we hadn't thought of.

A teacher leaving a lesson for students years after they graduate. A founder archiving the original vision for whoever runs the company next. A parent recording a message to be opened only if they can't be there. The platform is the canvas — you decide what goes on it.

What will you preserve?

Start free. No credit card required. Your first capsule takes under 3 minutes.