What is USPS Electronic Postmark ?

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The USPS Electronic Postmark , or EPM, is the application by the United States Postal Service (USPS) of a trusted date and time seal to an electronic message or transaction. The EPM: • Provides a validation of the time and date of the transaction. • Validates that an electronic transaction was not changed after its processing by WebPay. EPM provides you with the confidence and peace of mind for your electronic transactions that only the United States Postal Service can offer. more
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