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IMAPS
IMAPS (Internet Message Access Protocol Secure) is the encrypted version of IMAP that enables secure retrieval of email messages from a mail server over SSL/TLS. It protects the confidentiality and integrity of email content during transit, ensuring user credentials and emails remain private against eavesdropping and tampering..
Overview
IMAPS stands for Internet Message Access Protocol Secure, operating over port 993 using SSL/TLS encryption. It is an established protocol supported by nearly all modern email clients and servers, allowing encrypted retrieval and management of email messages. Unlike POP3, IMAPS synchronizes mail in real-time, enabling users to access messages from multiple devices while maintaining message status.
Protocol Details
IMAPS begins with a TLS handshake over port 993, establishing an encrypted connection before any IMAP commands are sent. This protects authentication credentials and subsequent data exchange. IMAP supports advanced mailbox management features, such as folder creation, message flagging, and search, made secure through encryption. The protocol is text-based and stateful, allowing complex interactions within secured sessions.
Operational Context
Because IMAPS maintains persistent server-side mail storage, it enables continuous synchronization across multiple devices. Many enterprise and cloud email services, including Microsoft Exchange, Google Workspace, and custom mail services, leverage IMAPS for secure access. Its encrypted nature makes it suitable for environments requiring confidentiality, such as finance, healthcare, and personal communication.