This Contao extension can be used to display notifications to logged-in users in the Contao frontend.
Embed a frontend module of the type Member Notifications in your Contao layout.
You can generate the message in the backend or have it generated programmatically.
// Add the notification programmatically
$type = 'happy-birthday-msg';
/** @var \Contao\FrontendUser $user */
$user = $this->getUser(); // Select a user who should have a notification displayed in the frontend.
$messageTitle = 'Happy Birthday'
$messageText = 'bla, bla, bla';
$endOfLifeTimeStamp = time() + 7*24*3600; // 1 week
new Markocupic\ContaoFrontendUserNotification\Notification\DefaultFrontendUserNotification($user, $type, $messageTitle, $messageText, )To use Bootstrap toast for the notifications you have to embed Bootstrap manually.