Routing a new InboundEmail is an asynchronous operation, which allows the ingress controllers to quickly accept new incoming emails without being burdened to hang while they're actually being processed.

Methods
P
Instance Public methods
perform(inbound_email)

Source: show | on GitHub 

# File actionmailbox/app/jobs/action_mailbox/routing_job.rb, line 9
def perform(inbound_email)
  inbound_email.route
end