What type of mail service provides the sender with a mailing receipt and electronic verification of delivery?

The correct choice for the question is Certified Mail. This service is specifically designed to provide the sender with a mailing receipt at the time of mailing and also offers electronic verification of delivery. This means that when a package is sent via Certified Mail, the sender can receive confirmation that their item has been delivered, enhancing security and accountability for important documents. This tracking capability is particularly useful for legal and sensitive communications.

In contrast, the other mail services do not offer the same level of verification. Priority Mail, while fast and reliable, does not include a mailing receipt or the same level of tracking as Certified Mail. Express Mail provides expedited delivery but is not exclusively tied to the receipt and verification features of Certified Mail. First-Class Mail is the standard mail service and does not offer tracking or verification options unless additional services are added, which further separates it from Certified Mail’s standard offerings. Thus, Certified Mail is the only service that inherently provides both the mailing receipt and electronic delivery verification as part of its features.