POP3 Common commands

POP3 Common commands the following describes some frequently-used pop3 commands: Command Parameter status description user username recognizes that this command and the following pass command are successful, this will cause status conversion pass password to recognize apop name, and digest to recognize a secure transmission password. digest is the md5 message digest, which leads to status conversion after successful execution, see RFC 1321 stat none for the mailbox statistics sent back by the request server, such as the total number of emails and Total Bytes uidl [msg #] for the unique identifier of the response message, each identifier of a pop3 session will be the unique list [msg #] Number of returned mails processed and the size of each email retr [msg #] process and return all text dele of the email identified by the Parameter [msg #] The processing server marks the email marked by the parameter as deleted, the quit command executes rset none to process all emails marked as deleted by the server, which is used to cancel del E command top [msg #], n processing server will return the first n lines of mail content identified by parameters, n must be a positive integer noop none processing server will return a positive response, do not perform any operations. Quit none update exit