Phone companies have decided to provide paid services the notification in the case of switched off or unreachable telephone. This app allows you to be sure that the person you called receives a notification of the call. different services are available:- SMS with the weekly or monthly threshold management (based on your rate plan)- Send E-mail (available if the contact has an email that we have called associated)- Send WhatsApp message (if the called number is associated with a whatsapp account)For each service you can decide whether to send directly, display a notification, or take no action.