Port 993

Port 993 is used for the IMAP (Internet Message Access Protocol) SSL communication. It is the default port for secure IMAP connections. IMAP is an email retrieval protocol that allows users to access and manage their email messages on a mail server without having to download them to their local device. The SSL encryption provides a secure connection between the client and server, protecting the email communication from interception or eavesdropping.

Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time.

Official

Port
Protocol (TCP/UDP)
Title
Description
Port Type
Port 993
tcp
imaps
imap4 protocol over
WELL KNOWN PORT
Port 993
udp
imaps
imap4 protocol over
WELL KNOWN PORT

UnOfficial

Unofficialy or sometimes with conflict, the same port may be used by different applications.

Port Protocol (TCP/UDP) Description
TCP UDP Ports
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