Add "send test message" button on MailSettings page

modules/system/controllers/Settings.php

@@ -1,12 +1,14 @@
 <?php namespace System\Controllers;
 
+use Mail;
 use Lang;
 use Flash;
 use Config;
 use Request;
 use Backend;
 use BackendMenu;
 use System\Classes\SettingsManager;
+use System\Behaviors\SettingsModel;
 use Backend\Classes\Controller;
 use ApplicationException;
 use Exception;
@@ -118,6 +120,27 @@ public function update_onSave($author, $plugin, $code = null)
         }
     }
 
+    /**
+     * Saves the current configuration and sends a test email to the current user
+     */
+    public function update_onTest(string $author, string $plugin, $code = null)
+    {
+        try {
+            $this->update_onSave($author, $plugin, $code);
+
+            SettingsModel::clearInternalCache();
+
+            Mail::raw(Lang::get('system::lang.settings.test_content'), function ($msg) {
+                $msg->to([$this->user->email => $this->user->full_name]);
+                $msg->subject(Lang::get('system::lang.settings.test_subject'));
+            });
+
+            Flash::success(Lang::get('system::lang.mail_templates.test_success'));
+        } catch (Exception $ex) {
+            Flash::error($ex->getMessage());
+        }
+    }
+
     public function update_onResetDefault($author, $plugin, $code = null)
     {
         $item = $this->findSettingItem($author, $plugin, $code);

modules/system/controllers/settings/update.htm

@@ -38,11 +38,21 @@
                     data-request-confirm="<?= e(trans('backend::lang.form.action_confirm')) ?>">
                     <?= e(trans('backend::lang.form.reset_default')) ?>
                 </button>
+
+                <button
+                    type="button"
+                    class="btn btn-info pull-right"
+                    data-request="onTest"
+                    data-request-data="redirect:0"
+                    data-load-indicator="<?= e(trans('system::lang.mail_templates.sending')) ?>"
+                    data-request-confirm="<?= e(trans('system::lang.mail_templates.test_confirm', [ 'email' => e(BackendAuth::getUser()->email)])) ?>">
+                    <?= e(trans('system::lang.mail_templates.test_send')) ?>
+                </button>
             </div>
         </div>
     <?= Form::close() ?>
 
 <?php else: ?>
     <p class="flash-message static error"><?= e(trans($this->fatalError)) ?></p>
     <p><a href="<?= $parentLink ?>" class="btn btn-default"><?= e(trans('system::lang.settings.return')) ?></a></p>
-<?php endif ?>
+<?php endif ?>

modules/system/lang/en/lang.php

@@ -163,6 +163,8 @@
         'not_found' => 'Unable to find the specified settings.',
         'missing_model' => 'The settings page is missing a Model definition.',
         'update_success' => ':name settings updated',
+        'test_subject' => 'Mail driver test',
+        'test_content' => 'This is a test email to confirm that the provided mail settings work.',
         'return' => 'Return to system settings',
         'search' => 'Search',
     ],