when you mail your return there is no acceptance notification.
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Tracking Information: You can check the status of your Certified Mail by visiting the USPS Tracking .... Enter your tracking number (usually starting with “9407”) to see the delivery or attempted delivery date and time.
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Postmarked Mailing Receipt: Upon request, Certified Mail provides a postmarked mailing receipt. This receipt serves as evidence that you sent the mail. To obtain it, complete PS Form 3800 and attach the barcoded label to your mailpiece
