Example POP3 Session

$ telnet mail.popserver.com 110
Trying 192.168.0.100
Connected to mail.popserver.com.
Escape character is '^]'.
+OK <21860.1076718099@mail.popserver.net>
user USERNAME
+OK
pass PASSWORD
+OK
list
1 3713
2 83815
3 6180
4 3813
5 2177
6 4134
7 7168
8 18234
.
retr 1
+OK ???? octets
[[message]]
.
dele 1
+OK
quit
+OK
Connection closed by foreign host.