class Net::POP3

def initialize(addr, port = nil, isapop = false)

This method does *not* open the TCP connection.

to use APOP authentication; it defaults to +false+.
The optional +isapop+ specifies whether this connection is going

The optional +port+ is the port to connect to.

+address+ is the hostname or ip address of your POP3 server.

Creates a new POP3 object. 
def initialize(addr, port = nil, isapop = false)
  @address = addr
  @ssl_params = POP3.ssl_params
  @port = port
  @apop = isapop
  @command = nil
  @socket = nil
  @started = false
  @open_timeout = 30
  @read_timeout = 60
  @debug_output = nil
  @mails = nil
  @n_mails = nil
  @n_bytes = nil
end