ls /usr/share/nmap/scripts/ | grep POP3
hydra -l <USER> -P <PASSWORDS_LIST> -f <IP> pop3 -V
hydra -S -v -l <USER> -P <PASSWORDS_LIST> -s 995 -f <IP> pop3 -V
telnet <IP> 110
USER <USER>
PASS <PASSWORD>
LIST
RETR <MAIL_NUMBER>
QUIT
telnet INSERTIPADDRESS 110
#To login
USER [username]
PASS [password]
#To list messages
LIST
#Retrieve message
RETR [message number]
#quits
QUIT