Expats
Create a private emergency contact plan when family lives in another country.
Encrypted on-device • Delivered if you go missing
Private Messages,
Delivered Only If You Go Missing
Create encrypted messages and private instructions for loved ones, then let secure delivery begin if you go missing.
Looking for a scheduled email alternative? Need a calmer dead man's switch alternative? Planning for life abroad?
AES-256 End-to-End Encrypted Zero-Knowledge Server Blockchain Verified We Cannot Read Your Data
Experience mode iOS & Android 10 languages
Miss Capsule
To: My Beloved Family
"If you're reading this, know that every moment with you was precious. I want you to…"
AES-256 Encrypted On Solana 3 Recipients
Delivered to Sarah M.
Zero-knowledge
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A calmer alternative to timed sending
How MissCaps Works
Instead of sending a message on a fixed date, MissCaps keeps your private instructions sealed unless your check-ins stop for long enough to matter.
Create a private capsule
Write a private message, add photos or video if needed, and choose the people you trust.
Set your miss days and stay active
Choose how many miss days can pass if you go missing before delivery begins. Manual check-ins and reading in the app both count.
Recipients verify before opening
If your check-ins stop past the threshold you set, secure delivery begins. Recipients verify first, then the content unlocks.
Who MissCaps Is For
A private fallback plan for people who live far from home, travel often, or want sensitive instructions to reach the right people only if needed.
Digital nomads
Keep private instructions ready without sending them too early.
Solo travelers
Prepare a calm fallback if normal contact stops while you are away.
Families and loved ones
Leave private messages and instructions that stay sealed unless they are truly needed.
Real App
See It In Action
Read to stay active
Daily check-in
Encrypted on-device
Blockchain Proof
Trusted recipients
Privacy controls
More private than scheduled email
A calmer alternative to rigid dead man's switch tools
MissCaps combines encrypted storage, trusted recipients, recovery codes, and check-in based delivery for people who need a private fallback plan.
End-to-End Encryption
Content is encrypted on your device with AES-256-GCM + RSA-2048 before upload. Your 6-digit privacy PIN derives the key through PBKDF2-SHA256 key derivation. Forget your PIN? Use one of your 8 one-time recovery codes to reset it — no data lost.
Zero-Knowledge Server
Your privacy PIN never leaves your device. The server stores only the encrypted private key. Without your PIN, the ciphertext is mathematically meaningless — even to us.
Check-In Based Delivery
Set your miss days and let delivery begin only if your check-ins stop for long enough to match the threshold you chose.
Blockchain Proof
Every capsule's SHA-256 fingerprint is recorded on the Solana blockchain. Recipients can independently verify the content was never altered — tamper-proof and immutable.
Secondary Confirmer
Optionally appoint a trusted person to confirm before any capsule is delivered. They can verify you're truly missing or cancel a false alert — giving you a human safety net.
Multilingual & Cross-Platform
Available in 10 languages, with native iOS and Android apps plus recipient delivery pages that work in any browser.
Looking for an Alternative?
MissCaps is built for people who need more privacy and control than scheduled email or traditional dead man's switch tools can offer.
Scheduled email alternative
Better for sensitive private messages that should not be sent on a simple timer.
Dead man's switch alternative
A calmer, more private approach for people who want trusted recipients and check-in based delivery.
Private emergency message app
A category page for users looking for encrypted private messages and fallback planning.
Available Now
Get MissCaps Today
Start with Experience Mode and see how MissCaps works as a private emergency message app for loved ones, expats, travelers, and people living far from home.
Requires iOS 14+ or Android 6.0+
What's New
Latest Announcements
Featured
MissCaps Is Now Available on the App Store and Google Play
As of April 23, 2026, MissCaps is officially available on both the Apple App Store and Google Play. MissCaps helps you create encrypted private capsules that are delivered only if you stop checking in.
Read more
Featured
MissCaps Beta Launch — Your Digital Legacy, Secured
We're thrilled to announce the beta launch of MissCaps, a privacy-first missed contact switch app that helps you leave your most important messages for the people who matter most — protected by zero-knowledge end-to-end encryption and Solana blockchain proof.
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How End-to-End Encryption Protects Your Capsules
A plain-language walkthrough of the cryptographic model behind MissCaps — from AES-256-GCM content encryption to RSA-2048 key wrapping and PBKDF2 answer derivation.
Read more