How to forward app notifications to e-mail or sms?

Question

Mobile development

There is an IP camera and it sends notifications to the phone about movement in the room, an alarm.
But when the Internet is turned off, notifications do not come.
Are there any applications that can forward push notifications on the phone to mail or sms
For example, leave an additional phone at home with a permanent network connection and all notifications are forwarded to mail or sms

Answer 1

For example, leave an additional phone at home with a permanent connection to the network and all notifications are forwarded to mail or sms

How complicated it is =)
The method is simpler: take a router with a USB port, insert a USB modem there, and set this modem as a backup channel in the router settings. The main wire from the provider is also inserted into this router.
As the main Internet disappears, traffic goes through a backup channel: a USB modem.