aesmsg

aesmsg is a privacy-first way to send sensitive information. It encrypts your message or file on your device before anything is uploaded, then gives you a secure link you can share through any app you already use — Slack, WhatsApp, iMessage, email, SMS, or Telegram.

Only the person you choose can open it. Your private keys never leave your device, and the server only ever stores ciphertext — never your plaintext, never your keys.

Built for the things that shouldn't sit in a chat history: API keys, passwords, environment variables, contracts, financial documents, and personal information.

How it works

• Compose a message or attach a file

• It's encrypted locally and sealed to your recipient's key

• You get a secure link — share it anywhere

• Your recipient opens it in aesmsg and decrypts it on their own device

Control every link

• Self-destruct after 10 minutes, 1 hour, 24 hours, 7 days, or a custom time

• Cap the number of opens

• Revoke any link instantly — revocation purges the ciphertext from the server

Designed for trust

• End-to-end encrypted; only the intended recipient can decrypt

• Zero-knowledge backend — the server can't read your content

• Verify contacts by fingerprint or QR code to prevent impersonation

• Biometric unlock, clipboard auto-clear, and background blur protect content on your device

aesmsg isn't a messenger or a chat app. It's an encryption layer over the channels you already use — so you can keep using them, without trusting them with your secrets.