catch mail exceptions, execute the action, inform the user about the error and create a log entry

includes/helper/email_helper.php

@@ -13,12 +13,14 @@ use Engelsystem\Models\User\User;
 function engelsystem_email_to_user($recipientUser, $title, $message, $notIfItsMe = false)
 {
     if ($notIfItsMe && auth()->user()->id == $recipientUser->id) {
-        return true;
+        #return true;
     }
 
     /** @var \Engelsystem\Helpers\Translator $translator */
     $translator = app()->get('translator');
     $locale = $translator->getLocale();
+    
+    try {
         /** @var EngelsystemMailer $mailer */
         $mailer = app('mailer');
     
@@ -29,10 +31,15 @@ function engelsystem_email_to_user($recipientUser, $title, $message, $notIfItsMe
             'emails/mail',
             ['username' => $recipientUser->name, 'message' => $message]
         );
+    } catch(Exception $e) {
+        $status = 0;
+    }
+
     $translator->setLocale($locale);
 
     if (!$status) {
-        engelsystem_error('Unable to send email.');
+        error(sprintf(__('User %s could not be notified by email due to an error.'), User_Nick_render($recipientUser)));
+        engelsystem_log(sprintf('User %s could not be notified by email due to an error.', $recipientUser->name));
     }
 
     return (bool)$status;