require 'net/imap'
module Imapper

  class Session
    def initialize(email_address, passwd)
      @imap = Net::IMAP.new('imap.gmail.com', 993, true, nil, false)
      @imap.login(email_address, passwd)
    end

    def inbox
      @imap.examine('INBOX')
      @imap.search(["SINCE", "6-Nov-2009"]).collect do |message_id|
        @imap.fetch(message_id, "ENVELOPE")[0].attr["ENVELOPE"]
      end
    end
  end
end

print "Enter email address: "
email_addr = gets.chomp
print "Enter password: "
passwd = gets.chomp
session = Imapper::Session.new(email_addr, passwd)
messages = session.inbox
messages.each do |message|
  puts message.subject
end