class Mail::FileDelivery

running Mail.
Make sure the path you specify with :location is writable by the Ruby process
by their message id
if it does not exist, and put one copy of the email in three files, called
set your location path to /path/to/mails then FileDelivery will create the directory
So if you have an email going to fred@test, bob@test, joe@anothertest, and you
address. Each file is appended to if it already exists.
FileDelivery class delivers emails into multiple files based on the destination

def deliver!(mail) 

def deliver!(mail)
  envelope = Mail::SmtpEnvelope.new(mail)
  if ::File.respond_to?(:makedirs)
    ::File.makedirs settings[:location]
  else
    ::FileUtils.mkdir_p settings[:location]
  end
  envelope.to.uniq.each do |to|
    path = ::File.join(settings[:location], File.basename(to.to_s+settings[:extension]))
    ::File.open(path, 'a') do |f|
      f.write envelope.message
      f.write "\r\n\r\n"
    end
  end
end

def initialize(values) 

def initialize(values)
  self.settings = { :location => './mails', :extension => '' }.merge!(values)
end