@Carnival-Boy we use LogMeIn and get emails at every connection.
I can't actually figure out how to do this and it would be very useful. Would you mind letting me know? Is it under the 'Manage Altert Packages' in LogMeIn Central? I've setup a few alerts but can't see one that handles this.
And that is a weakness of single char excerpts from security codes. There's no good way to hash those, so they have to be stored in plain text. So make sure you don't reuse that as a PIN elsewhere.