diff --git a/guides/bug_report_templates/action_mailbox_gem.rb b/guides/bug_report_templates/action_mailbox_gem.rb
new file mode 100644
index 0000000000..9adfa0d859
--- /dev/null
+++ b/guides/bug_report_templates/action_mailbox_gem.rb
@@ -0,0 +1,75 @@
+# frozen_string_literal: true
+
+require "bundler/inline"
+
+gemfile(true) do
+  source "https://rubygems.org"
+
+  git_source(:github) { |repo| "https://github.com/#{repo}.git" }
+
+  # Activate the gem you are reporting the issue against.
+  gem "rails", "6.0.3"
+  gem "sqlite3"
+end
+
+require "active_record/railtie"
+require "active_storage/engine"
+require "action_mailbox/engine"
+require "tmpdir"
+
+class TestApp < Rails::Application
+  config.root = __dir__
+  config.hosts << "example.org"
+  config.eager_load = false
+  config.session_store :cookie_store, key: "cookie_store_key"
+  secrets.secret_key_base = "secret_key_base"
+
+  config.logger = Logger.new($stdout)
+  Rails.logger  = config.logger
+
+  config.active_storage.service = :local
+  config.active_storage.service_configurations = {
+    local: {
+      root: Dir.tmpdir,
+      service: "Disk"
+    }
+  }
+
+  config.action_mailbox.ingress = :relay
+end
+
+ENV["DATABASE_URL"] = "sqlite3::memory:"
+
+Rails.application.initialize!
+
+require ActiveStorage::Engine.root.join("db/migrate/20170806125915_create_active_storage_tables.rb").to_s
+require ActionMailbox::Engine.root.join("db/migrate/20180917164000_create_action_mailbox_tables.rb").to_s
+
+ActiveRecord::Schema.define do
+  CreateActiveStorageTables.new.change
+  CreateActionMailboxTables.new.change
+end
+
+class ApplicationMailbox < ActionMailbox::Base
+  routing (/^replies@/i) => :replies
+end
+
+class RepliesMailbox < ActionMailbox::Base
+  def process
+    $processed = mail.subject
+  end
+end
+
+require "minitest/autorun"
+
+class RepliesMailboxTest < ActionMailbox::TestCase
+  setup do
+    $processed = false
+    @inbound_email = receive_inbound_email_from_mail \
+      to: "replies@example.com", subject: "Here is a reply"
+  end
+
+  test "successful mailbox processing" do
+    assert_equal "Here is a reply", $processed
+  end
+end
diff --git a/guides/bug_report_templates/action_mailbox_master.rb b/guides/bug_report_templates/action_mailbox_master.rb
new file mode 100644
index 0000000000..303d7d5222
--- /dev/null
+++ b/guides/bug_report_templates/action_mailbox_master.rb
@@ -0,0 +1,74 @@
+# frozen_string_literal: true
+
+require "bundler/inline"
+
+gemfile(true) do
+  source "https://rubygems.org"
+
+  git_source(:github) { |repo| "https://github.com/#{repo}.git" }
+
+  gem "rails", github: "rails/rails"
+  gem "sqlite3"
+end
+
+require "active_record/railtie"
+require "active_storage/engine"
+require "action_mailbox/engine"
+require "tmpdir"
+
+class TestApp < Rails::Application
+  config.root = __dir__
+  config.hosts << "example.org"
+  config.eager_load = false
+  config.session_store :cookie_store, key: "cookie_store_key"
+  secrets.secret_key_base = "secret_key_base"
+
+  config.logger = Logger.new($stdout)
+  Rails.logger  = config.logger
+
+  config.active_storage.service = :local
+  config.active_storage.service_configurations = {
+    local: {
+      root: Dir.tmpdir,
+      service: "Disk"
+    }
+  }
+
+  config.action_mailbox.ingress = :relay
+end
+
+ENV["DATABASE_URL"] = "sqlite3::memory:"
+
+Rails.application.initialize!
+
+require ActiveStorage::Engine.root.join("db/migrate/20170806125915_create_active_storage_tables.rb").to_s
+require ActionMailbox::Engine.root.join("db/migrate/20180917164000_create_action_mailbox_tables.rb").to_s
+
+ActiveRecord::Schema.define do
+  CreateActiveStorageTables.new.change
+  CreateActionMailboxTables.new.change
+end
+
+class ApplicationMailbox < ActionMailbox::Base
+  routing (/^replies@/i) => :replies
+end
+
+class RepliesMailbox < ActionMailbox::Base
+  def process
+    $processed = mail.subject
+  end
+end
+
+require "minitest/autorun"
+
+class RepliesMailboxTest < ActionMailbox::TestCase
+  setup do
+    $processed = false
+    @inbound_email = receive_inbound_email_from_mail \
+      to: "replies@example.com", subject: "Here is a reply"
+  end
+
+  test "successful mailbox processing" do
+    assert_equal "Here is a reply", $processed
+  end
+end