Cron automatically send output of command to me, therefore it's useless to use `mail`.
But your post was inspiration for me, so I made script:
output2=$(/usr/sbin/service nginx reload)
if [ "$exit_status" -ne 0 ]; then
echo "error in reload, check it"
I need to test it, but I hope I'm close to achieve my goal.
If you have some remarks, write it!