Sendmail Callback, deactivate users who bounce

gistfile1.txt

class MailController < ApplicationController
  layout "none"
  # the sendgrid notification callback.
  def notification
    puts params
    u = User.where(:email => params["email"]).first
    if params["event"] == 'bounce' 
      u.deactivate! "an invalid email address has been provided"
    elsif params["event"] == 'spamreport'
      u.deactivate! "a spam report was filed from your email address"
    end
    render :text => "OK"
  end
end