Cryptletter

Cryptletter is an open source encrypted self-destruct message service that is suitable for securely transmitting sensitive information such as passwords, tokens, etc. to avoid plaintext information remaining in emails. ** Core features:** - End-to-end encryption: Use AES-256 client-side encryption, key is passed through URL hash, never uploaded to the server - Self-destruct message: Set message TTL to automatically destroy after opening - IP binding: Restricted messages can only be opened from the IP address of the initial access - File attachments: Support file uploading, configurable local or S3 storage - Privacy priority: Message storage is encrypted, and the server cannot read the content