Send an email over IMAP using Ruby

email.rb

# http://www.tutorialspoint.com/ruby/ruby_sending_email.htm
# http://www.devco.net/archives/2009/10/27/using_ruby_netimap_with_plain_auth.php

require 'net/smtp'
require 'net/imap'

message = <<MESSAGE_END
From: Private Person <[email protected]>
To: A Test User <[email protected]>
MIME-Version: 1.0
Content-type: text/html
Subject: SMTP e-mail test

This is an e-mail message to be sent in HTML format

<b>This is HTML message.</b>
<h1>This is headline.</h1>
MESSAGE_END

Net::SMTP.start('mail.your-domain.com', 25, 'localhost', 'username', 'password') do |smtp|
  smtp.send_message message, '[email protected]',  '[email protected]'
end

class ImapPlainAuthenticator
  def process(data)
    return "#{@user}\0#{@user}\0#{@password}"
  end
 
  def initialize(user, password)
    @user = user
    @password = password
  end
end
 
Net::IMAP::add_authenticator('PLAIN', ImapPlainAuthenticator)

imap = Net::IMAP.new('imap.your.com')
 
imap.authenticate('PLAIN', 'username', 'pass')
imap.examine('INBOX/subfolder')
imap.search(["ALL"]).each do |message_id|
    envelope = imap.fetch(message_id, "ENVELOPE")[0].attr["ENVELOPE"]
    puts "#{envelope.from[0].mailbox}"
end