Which protocol is typically used for managing email retrieval?

The correct protocol for managing email retrieval is IMAP, or Internet Message Access Protocol. IMAP is specifically designed to facilitate the retrieval and management of email messages from a mail server while allowing users to organize their emails in folders, mark messages as read or unread, and synchronize their email across multiple devices. This means that actions taken on one device will be reflected on other devices that access the same email account, making it highly suitable for users who need access to their emails from various locations.

In contrast, FTP (File Transfer Protocol) is primarily used for transferring files between computers and is not suited for email retrieval. HTTP (Hypertext Transfer Protocol) is used for transferring web pages and other content on the internet, not for email management. Telnet is a network protocol used to provide a command-line interface for communication with a remote device, which is not relevant for the management of email. Thus, IMAP is the most appropriate choice for email retrieval.