How to send mail via Yahoo!Mail by Ruby.

How to send mail via Yahoo!Mail by Ruby.
Yahoo!Mail use POP before SMTP.

A sample code.

require 'net/smtp'
require 'net/pop'
require 'time'

content = <<EOF
From: from@yahoo.co.jp
To: to@yahoo.co.jp
Subject: Hello!
Date: #{Time.now.rfc2822}

How are you.
EOF

Net::POP3.start('pop.mail.yahoo.co.jp', 110, 'Yahoo! ID', 'password') do |pop|
end

Net::SMTP.start('smtp.mail.yahoo.co.jp', 25, 'yahoo.co.jp', 'Yahoo! ID', 'password', :login) do |smtp|
  smtp.send_message(content, 'from@yahoo.co.jp', 'to@gmail.com')
end