gistfile1.rb

require 'rubygems'
require 'mail'

Mail.defaults do
  delivery_method :smtp, { :address => "smtp.gmail.com",
    :port => 587,
    :domain => 'varneckas.lt',
    :user_name => 'tomas@varneckas.lt',
    :password => '',
    :authentication => 'plain',
    :enable_starttls_auto => true }
end

numbers = File.read("numbers.txt").split("\n")
body_text = File.read("body.txt")
attachment = File.open("attachment").path

size = numbers.size
numbers.each_with_index do |number, index|
  Mail.deliver do
    from "tomas@varneckas.lt"
    to "t.varneckas@gmail.com"
    subject number
    body body_text
    add_file attachment
  end
  puts "#{number} sent. #{index.succ}/#{size}"
end