Step-by-step Solution:

IMAP (Internet Message Access Protocol) is specifically designed for email clients to retrieve and read emails stored on a mail server, allowing for synchronization across multiple devices. Let's evaluate the other protocols: - **DNS (Domain Name System)** translates human-readable domain names into IP addresses. - **ICMP (Internet Control Message Protocol)** is used for network diagnostics (e.g., ping). - **SMTP (Simple Mail Transfer Protocol)** is used for *sending* emails, not reading them.