There was an episode of one of those crime shows that revolved around a site like this. Except it was the rapture not individuals dying. Iirc if the owner of the page didn't check in for 24 hrs it sent all the emails. He got murdered all the emails got sent out and one of them was a murder confession. Weird episode, I wish I could remember which show it was. Feels like a CSI episode
**Did some googling. Law and Order - 'Rapture'