Pinging 5 hosts once every hour

Hello folks;
I'm trying to write a shell script to ping 5 hosts i have once every 1 hour and if it receives any failure from any of those hosts, it sends an email alert with the results from this failing ping.

Any help would be greatly appreciated

Yes, well what have you done so far, what isnt working for you?
May we look at or script and your the output you get (error...)?