Send Email With Ruby

gmail.rb

# -*- coding: utf-8 -*-

# Usage:
# export gmail_username=xxx
# export gmail_password=yyy
# ruby gmail.rb

require 'rubygems'
require 'mail'

smtp = {  
    :address => 'smtp.gmail.com', 
    :port => 587, 
    :domain => 'gmail.com',
    :user_name => ENV['gmail_username'], 
    :password => ENV['gmail_password'],
    :enable_starttls_auto => true 
}

Mail.defaults { delivery_method :smtp, smtp }
mail = Mail.new do
  from 'imwilsonxu@gmail.com'
  to ['imwilsonxu@gmail.com']
  subject 'Hello from Ruby'
  body 'Hello Gmail'
end

mail.deliver!