All Common Mail Ports and Their Purpose
IMAPS, like the IMAP protocol, is also used to receive e-mail, but it is more secure, prevents e-mail from being intercepted and leaked by hackers, and can also achieve anti-repudiation functions for e-mail recipients.
Outlook: IMAP server name: outlook.office365.comIMAP port: 993IMAP encryption method TLSPOP server name: outlook.office365.comPOP
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