pop3_open is available since version 1.0.
Prototype:
number pop3_open(string hostname, string username, string password[, number port=110])
Parameters
hostname
the hostname of the pop3 server
password
the password for username
port
the pop3 server port
Description:
Opens a connection to a POP3 mail server. For secure connections, check
pop3_open_secured.
Return value:
Returns a connection handle if succeeded (successfully connected) or -1 if failed. To get the error returned by the server, you may call
pop3_error.