I've created a support case on this issue; however, I am currently in a trial of the GSM.  I setup an email alert to my Gmail address for new end point installations.  The first few came through, but were very slow.  Now I'm not getting any.  The last dozen or so have not triggered any email alerts.  Yes, I've checked my Gmail Spam folder, not in there.  Anyone else have issues with alerts and Gmail (or alerts in general)?