How Sealed Letter protects your content through encryption, access controls, and system design.

Security Model & Data Protection

#

Security is foundational to Sealed Letter.

All letters are encrypted both in transit and at rest using modern encryption practices.

For pick-up delivery, the system cannot open the letter without the password, which is never stored.

For in-app delivery, the system briefly decrypts the letter solely to deliver it securely to the intended recipient. Access is strictly limited to this purpose.

Permissions are tightly scoped, and operational access is logged and monitored.

Letter content is never analyzed, indexed, or shared.