What is a common characteristic of certified mail?

Certified mail is a service provided by postal authorities that offers both proof of mailing and proof of delivery for important documents and items. This feature is essential for customers who need to ensure that their mail not only reaches its intended recipient but also requires verification of mailing, often for legal or important correspondence.

When a sender uses certified mail, they receive a receipt as proof of the mailing, which includes details such as the date sent and a tracking number. Upon delivery, the recipient's signature is collected, and this signature can be used as further proof that the item has been delivered. This service is particularly valuable for legal documents, contracts, or notices, where documentation of delivery is critical.

This characteristic makes certified mail distinct and more reliable compared to standard mailing options, hence its preference for urgent and significant communications.