I am using DNN 9 and I want to send a notification with an attachment file, but seems that DNN doesn't allow to do that.

Is there is a way (or any workaround) to do that?

Here is the DNN code of the NotificationsController

and here is my code that calls the DNN code

//...

Notification dnnNotification = new Notification { NotificationTypeID = notification.NotificationTypeId, From = notification.From, Subject = notification.Subject, Body = notification.Body }; NotificationsController.Instance.SendNotification(dnnNotification, portalId, dnnRoles, dnnUsers);