class ActionMailbox::InboundEmail

inbound_email.source # Returns the full rfc822 source of the email as text
inbound_email.mail.from # => ‘david@loudthinking.com’
Examples:
using the #source method.
which is available as a Mail object from #mail. But you can also access the raw source directly
When working with an InboundEmail, you’ll usually interact with the parsed version of the source,
automatic incineration at a later point.
it’ll count as having been #processed?. Once processed, the InboundEmail will be scheduled for
Once the InboundEmail has reached the status of being either delivered, failed, or bounced,
* Bounced: Rejected processing by the specific mailbox and bounced to sender.
* Failed: An exception was raised during the specific mailbox’s execution of the #process method.
* Delivered: Successfully processed by the specific mailbox.
* Processing: During active processing, while a specific mailbox is running its #process method.
* Pending: Just received by one of the ingress controllers and scheduled for routing.
and tracks the status of processing. By default, incoming emails will go through the following lifecycle:
The InboundEmail is an Active Record that keeps a reference to the raw email stored in Active Storage

def instrumentation_payload # :nodoc:

:nodoc: 
def instrumentation_payload # :nodoc:
  {
    id: id,
    message_id: message_id,
    status: status
  }
end

def mail 

def mail
  @mail ||= Mail.from_source(source)
end

def processed? 

def processed?
  delivered? || failed? || bounced?
end

def source 

def source
  @source ||= raw_email.download
end