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Electronic Postmark

Protect the integrity of your content
The EPM Service is a content integrity and time-and-date stamp application which can be used to verify the authenticity of a document or file sent electronically as of a specific point in time.
To get started, simply click the sign-up button on the left, create an account and download the software today!

Detect   Trust   Protect
The EPM Service allows users to detect whether or not documents or files stamped with an EPM have been altered or modified. EPM seals issued by Authentidate are stored in an approved and highly secure environment for up to seven years from the date of application. The U.S. Postal Service is a backup verifier for all EPM seals applied.

*Authentidate is an authorized EPM® Service Provider.