ActionMailer::PartContainer

Accessors and helpers that ActionMailer::Base and ActionMailer::Part have in common. Using these helpers you can easily add subparts or attachments to your message:

  def my_mail_message(...)
    ...
    part "text/plain" do |p|
      p.body "hello, world"
      p.transfer_encoding "base64"
    end

    attachment "image/jpg" do |a|
      a.body = File.read("hello.jpg")
      a.filename = "hello.jpg"
    end
  end