POP3 receiving emails

The POP3 command code is as follows:
Command Parameter status description
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User Username recognizes that if this command is successful with the following PASS Command, status conversion will occur.
Pass password approval
APOP name, digest recognizes that digest is the MD5 message digest
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Stat none processes the mailbox statistics sent back by the request server, such as the total number of emails and total bytes.
UIDL [MSG #] indicates the unique identifier of the Response Message. Each identifier of a POP3 session will be unique.
List [MSG #] Number of returned mails processed and size of each email
RETR [MSG #] process and return all text of the email identified by Parameters
Dele [MSG #] The processing server marks the emails marked by parameters as deleted and is executed by the quit command.
Rset none processing server resets all emails marked as deleted, used to cancel the DELE Command
Top [MSG #] The processing server will return the content of the first n lines of emails identified by parameters. N must be a positive integer.
Noop none processing server returns a positive response

Use the command line in the Windows DOS window, for example:
# Telnet my.isp.net 110
User Username
Pass password
List

Dele 3
Dele 5
Quit
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