IMAP (Internet Message Access Protocol) is an email retrieval protocol that allows users to access and manage emails stored on a remote mail server. Unlike POP3, which downloads emails locally and removes them from the server, IMAP keeps messages synchronized across multiple devices, enabling users to read, delete, or organize emails while keeping them stored centrally. This makes IMAP ideal for accessing email from different locations and devices. IMAP also supports folder management, search functionality, and real-time syncing, making it widely used for modern email clients. However, because emails remain on the server, it requires adequate server storage and security measures, such as SSL/TLS encryption and strong authentication, to protect sensitive data. Learn more: https://en.wikipedia.org/wiki/IMAP_