A type of mail that is sent with a receipt confirming that it has been sent and received.

प्रमाणित डाक

English Usage: I sent the important documents via certified mail to ensure they arrived safely.

Hindi Usage: मैंने महत्वपूर्ण दस्तावेज़ प्रमाणित डाक से भेजे ताकि यह सुनिश्चित हो सके कि वे सुरक्षित रूप से पहुंचे।