Add an In mailbox

app/mailboxes/application_mailbox.rb

@@ -1,3 +1,4 @@
 class ApplicationMailbox < ActionMailbox::Base
   # routing /something/i => :somewhere
+  routing  :all => :in
 end

app/mailboxes/in_mailbox.rb

@@ -0,0 +1,4 @@
+class InMailbox < ApplicationMailbox
+  def process
+  end
+end

config/credentials.yml.enc

@@ -1 +1 @@
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test/mailboxes/in_mailbox_test.rb

@@ -0,0 +1,11 @@
+require "test_helper"
+
+class InMailboxTest < ActionMailbox::TestCase
+  # test "receive mail" do
+  #   receive_inbound_email_from_mail \
+  #     to: '"someone" <someone@example.com>',
+  #     from: '"else" <else@example.com>',
+  #     subject: "Hello world!",
+  #     body: "Hello?"
+  # end
+end