Keep USPS proof of delivery connected to the document you mailed. For Certified Mail, Priority Mail, and Priority Mail Express, CaseMail generates a Certificate of Delivery when USPS provides delivery information and associates it with the same CMID mailing record.
A CaseMail Certificate of Delivery connects USPS proof of delivery information to the mailed document and its CaseMail ID (CMID). CaseMail generates it for Certified Mail, Priority Mail, and Priority Mail Express when USPS provides delivery information.
For Certified Mail, Priority Mail, and Priority Mail Express, CaseMail generates a Certificate of Delivery when USPS provides delivery information and keeps it with the same mailing record.
A CaseMail Certificate of Delivery connects USPS proof of delivery information to the mailed document and its CaseMail ID (CMID). CaseMail generates it for Certified Mail, Priority Mail, and Priority Mail Express when USPS provides delivery information.
A CaseMail Certificate of Delivery connects USPS proof of delivery information to the mailed document and its CaseMail ID (CMID). CaseMail generates it for Certified Mail, Priority Mail, and Priority Mail Express when USPS provides delivery information.
The CMID keeps the certificate associated with the document and the CaseMail mailing record.
Mailing and delivery are separate events. Each certificate documents its part of the same CMID-linked mailing record.
Over 3 million certificates generated and presented across all U.S. jurisdictions.
Keep the USPS proof of delivery information and the document it relates to together. The Certificate of Delivery preserves that connection within the CaseMail mailing record for later review, sharing, or verification.
A CaseMail Certificate of Delivery connects USPS proof of delivery information to the mailed document and its CaseMail ID (CMID). CaseMail generates it for Certified Mail, Priority Mail, and Priority Mail Express when USPS provides delivery information.
Identify the document and mailing record.
Connect USPS proof of delivery to the mailing record.
Connect the delivery event to the mailed document.
The mailed document is associated with its unique CaseMail ID.
Tracking and delivery updates for Certified Mail, Priority Mail, and Priority Mail Express are associated with the mailing record.
CaseMail receives the delivery information associated with the mailpiece.
CaseMail generates the certificate and connects it to the CMID mailing record. For Certified Mail with ERR, USPS ERR proof of delivery information is incorporated into the certificate.
For Certified Mail with Electronic Return Receipt, CaseMail incorporates the USPS ERR proof of delivery information into the Certificate of Delivery. That keeps the USPS delivery record connected to the mailed document, CMID, mailing history, and CaseMail certificate.
The Electronic Return Receipt information received from USPS is incorporated into the CaseMail Certificate of Delivery rather than maintained as a separate, disconnected record.
The USPS ERR information becomes part of the CaseMail certificate record, which can be verified through CaseMail to confirm the certificate is authentic and has not been altered.
The value of the CaseMail record is the relationship between the mailed content and the postal events that follow it.
The document associated with the postal transaction is tied to the record through its CMID.
The unique identifier connects the exact document to its mailing history and associated certificates.
For Certified Mail, Priority Mail, and Priority Mail Express, USPS tracking and delivery updates stay associated with the mailing record.
For Certified Mail with Electronic Return Receipt, USPS ERR proof of delivery information is incorporated into the Certificate of Delivery.
The CaseMail-generated certificate associated with the later USPS delivery event.
Authorized users can download the complete package or individual certificates in PDF format.
The unique CaseMail ID connects your Certificate of Delivery to the exact mailed document and its mailing history. It keeps the certificate associated with the communication it documents.
The practical difference: the record does not stop at “a tracking number existed.” It maintains the relationship between the tracking/mailing events and the document that was actually sent.
CaseMail uses blockchain technology as an additional integrity layer for certificate and mailing-record verification. Relevant record hashes and references are cryptographically anchored so later changes can be detected and the integrity of the record can be checked over time.
Blockchain is not the customer experience—it is part of the technology behind the record. The customer benefit is a certificate and mailing record designed to remain verifiable long after the mailing is complete.
Authorized users can access the certificate package from their CaseMail account, download the full package or individual certificates as PDFs, print them, and share downloaded copies. Third parties can use the CaseMail verification page to confirm that a certificate is authentic and has not been altered.
Pay-as-you-go records are retained for 90 days. Paid subscribers retain records while the subscription account remains active.
Certificates and connected records can support business, legal, compliance, and notice matters where teams need organized documentation of what was mailed and the USPS information associated with it.
Keep the mailed document and its mailing history together instead of maintaining separate copies, receipts, and tracking records.
Maintain the mailing event and later delivery-status information in one connected record when timing is important to the matter.
Maintain individual mailing records and related certificates when a notice or communication is sent to multiple recipients.
Learn when your certificate is created, what it documents, and how to access or verify it.
A CaseMail Certificate of Delivery connects USPS proof of delivery information to the mailed document and its CMID mailing record.
CaseMail generates a Certificate of Delivery when USPS provides delivery information for Certified Mail, Priority Mail, or Priority Mail Express.
Certificates of Delivery are generated for Certified Mail, Priority Mail, and Priority Mail Express when USPS provides delivery information. Certificates of Mailing are generated separately for all postage classes after USPS acceptance.
For Certified Mail with Electronic Return Receipt, CaseMail incorporates USPS ERR proof of delivery information into the Certificate of Delivery and keeps it connected to the mailed document and CMID mailing record.
A Certificate of Mailing documents what was mailed and when it was presented for mailing. A Certificate of Delivery connects the later USPS proof of delivery information to that same mailing record.
Authorized users can download the certificate as a PDF, print it, and share downloaded copies. Third parties can use CaseMail’s certificate verification page to check authenticity and integrity.
Create your CaseMail account to send your mailing online and keep the related certificate records connected.
