How to prevent website to die when webmaster die?

This is an idea on PHP website which allows sending notiffication once some person die.

user can setup an alert message to up to 100 email recipients and it will be sent if:
- an website stop returning Code 200 (online) for 30 consecutive days (if that happen for 14 days, an alert is sent to user first)
- an domain expire and is made available for public

user can choose to have certain message be published publicly on the PHP system website, so people can read it. Example if he want to share publicly website backups and invite people to setup the website again.

Please is there anyone who have any thoughts about this system or wish to create it?