Access helpers from mailer?

Question

I have trying to access helper methods from a rails 3 mailer in order to access the current user for the session.

I put the helper :application in my mailer class,

Answer 1

The single method version of promoting a method to being a helper that is available in ApplicationController also works in ActionMailer:

class ApplicationMailer < ActionMailer::Base
  helper_method :marketing_host

  def marketing_host
    "marketing.yoursite.com"
  end
end

from there you can call marketing_host from any of your mailer views