diff --git a/mailhandler_d8_demo/mailhandler_d8_demo.module b/mailhandler_d8_demo/mailhandler_d8_demo.module
new file mode 100644
index 0000000..4f76461
--- /dev/null
+++ b/mailhandler_d8_demo/mailhandler_d8_demo.module
@@ -0,0 +1,19 @@
+<?php
+/**
+ * @file
+ * Hook implementations for Mailhandler Demo module.
+ */
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Implements hook_form_FORM_ID_alter().
+ */
+function mailhandler_d8_demo_form_inmail_demo_paste_alter(&$form, FormStateInterface $form_state) {
+  $inmail_demo_examples = $form['example']['#options'];
+
+  $directory = drupal_get_path('module', 'mailhandler_d8_demo') . '/eml/';
+  $examples = array_keys(file_scan_directory($directory, '/.*/'));
+  $mailhandler_demo_examples = array_map('basename', array_combine($examples, $examples));
+
+  $form['example']['#options'] = array_merge($inmail_demo_examples, $mailhandler_demo_examples);
+}