The short answer.
Use an online print-and-mail service that offers Certified Mail for eligible letters. Upload or prepare the document, enter both addresses, select Certified Mail and any available return-receipt option, review the total, and approve the order. The provider prints and prepares the letter, submits it to USPS, and gives you the tracking information associated with the order.

Prepare the final document
Finish the letter before ordering. Check names, dates, account references, attachments, and signatures. Save the approved version as a US Letter PDF so the print layout is stable.
Enter and review both addresses
Provide a return address and the complete recipient address. Review apartment, suite, and ZIP information yourself even when the service offers address suggestions.
Select Certified Mail
Choose Certified Mail when you need a mailing receipt and USPS tracking for an eligible letter. If an electronic return receipt is available and appropriate, review what it records and its current price before adding it.
Review the itemized total
The total can include the base letter service, printing, Certified Mail, return-receipt service, and other selected options. Treat prices shown before configuration as starting prices and use the checkout total for the actual order.
Keep the order and tracking record together
Store the approved PDF, order confirmation, tracking number, and available carrier events in the same case or customer record. The documents should remain connected to the decision that required the mailing.
Does Certified Mail include a signature?
Certified Mail provides a mailing receipt and tracking. Signature evidence depends on the selected USPS service and any return-receipt option, so review the current service details before ordering.
Can every letter use Certified Mail?
Availability depends on the mailpiece and service configuration. Check the options shown for the actual order.
Is online Certified Mail instant?
No. Ordering is digital, but the document still has to be printed, prepared, transferred to USPS, and physically delivered.
Sources and further reading
Product availability and service terms can change. Check the provider’s current information before placing an order or implementing a workflow.