old_contents: from lamson.routing import route, stateless
  from app.model.email import make_email
  
  @route("(alias)@(domain)", alias=".+", domain=".+")
  @stateless
  def START(message, alias=None, domain=None):
      make_email(message, alias, domain)
  
new_contents: from lamson.routing import route, stateless, nolocking
  from app.model.email import make_email
  
  @route("(alias)@(domain)", alias=".+", domain=".+")
  @nolocking
  @stateless
  def START(message, alias=None, domain=None):
      make_email(message, alias, domain)
  
subject: Make the out handler non-locking, queue will handle locking on the input, django/sql will handle locking on the output