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certified mail

American  

noun

  1. uninsured first-class mail requiring proof of delivery.


Etymology

Origin of certified mail

First recorded in 1950–55

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

File this by certified mail and hold on to the receipt, Hofmann advised.

From MarketWatch • May 27, 2026

Use certified mail, registered mail, or an approved private delivery service like FedEx or UPS, not labels from self-service kiosks or postage meters.

From The Wall Street Journal • Mar. 20, 2026

After a trip to the post office — where she spent $240 sending off dispute letters by certified mail for clients — she realized more money was going out than in.

From New York Times • Jun. 7, 2023

At times, he said, the correspondence was sent by certified mail and the IRS still cannot locate it.

From Seattle Times • Jul. 16, 2021

If you want to know the date that the Copyright Office receives your material, send it by registered or certified mail and request a return receipt.

From Copyright Basics by Library of Congress. Copyright Office

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