Not Receiving New Ticket Emails

Not Receiving New Ticket Emails

Hello,

For some time I was receiving updates when a new ticket was created with no issue.  Recently I have not been notified when a new ticket was created.  Looking back through my email, there is a lack of parity between the ticketing system and the emails in my Inbox.  This is a big problem and has caused some tickets to go unanswered for long periods.  This may be a misconfiguration on our end, however I did not make any changes to my preferences before this started happening that I can remember.

I have verified that my Contact Notifications under profile preferences are set to receive email notifications when Receiving a Ticket.

What are some of the reasons this would happen?