fixup! WIP Integrate ActionMailbox

spec/script/mailin_spec.rb

@@ -24,11 +24,4 @@ def mailin_test(email_filename)
     expect(r.status).to eq(0)
     expect(r.out).to eq("")
   end
-
-  # Destroy the incoming message so that it doesn't affect other tests
-  after do
-    ir = info_requests(:other_request)
-    incoming_message = ir.incoming_messages[0]
-    incoming_message.destroy
-  end
 end

spec/support/email_helpers.rb

@@ -11,7 +11,10 @@ def receive_incoming_mail(email_name_or_string, **kargs)
   content = load_file_fixture(email_name_or_string) || email_name_or_string
   content = gsub_addresses(content.dup, **kargs)
   content = ::Mail::Utilities.binary_unsafe_to_crlf(content)
-  RequestMailer.receive(content)
+
+  ActionMailbox::InboundEmail.create_and_extract_message_id!(
+    content, origin: :mailin, status: :processing
+  )&.route
 end
 
 def get_fixture_mail(filename, email_to = nil, email_from = nil)