Under "Notification Rules", I have "Acknowledge requester by e-mail when a new request is received" and this works.  If I put in an incident request for someone, they get the confirmation email.

However, if I also check "Acknowledge requester by e-mail when the request is closed", the requester never receives this email when the corresponding incident is closed.  I also tried the "E-mail user when a request is resolved" and this didn't send an email either when I changed the incident's status to "resolved".

So, I know email is working (as the requester gets the first email when the incident is created), but that's the only email they get.

Any ideas?