gistfile1.rb

require 'rubygems'
require 'action_mailer'

ActionMailer::Base.delivery_method = :smtp
ActionMailer::Base.smtp_settings = {
  :enable_starttls_auto => true,
  :tls => true,
  :address => "smtp.gmail.com",
  :port => 587,
  :domain => "gmail.com",
  :authentication => "plain",
  :user_name => "youraccount@gmail.com",
  :password => "yourpassword"
}

class Notifier < ActionMailer::Base
  default :from => "youraccount@gmail.com"

  def deploy_notification(cap_vars)
    now = Time.now
    msg = "<h2>Deploy on #{cap_vars.target}</h2><p><b>Date:</b> #{now.strftime("%m/%d/%Y")} at #{now.strftime("%I:%M %p")}</p><p><b>Current revision:</b> #{cap_vars.current_release}.</p>\n<p><b>Change log:</b></p>\n-----------------------------------------------------------------------<br\><p>#{cap_vars.history}</p><small>(this email is sent by deployment program, don't reply!)</small>"

    mail(:to => cap_vars.notify_emails,
         :subject => "#{cap_vars.application} was deployed to #{cap_vars.target} on #{now.strftime("%m/%d/%Y")}") do |format|
      format.text { render :text => msg}
      format.html { render :text => "<p>" + msg + "<\p>"}
    end
  end
end