Please remember to mark the replies as answers if they helped. If the issue affect all emails, including mails in Inbox, please Microsoft does not guarantee the accuracy of this information. Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. If this is your case, you may refer to the instructions in the link below to get an alert for all new messages:
This article for more details about when Desktop Alerts don’t appear. If you're using message rules andĪ new message is moved out of the default account Inbox, you might not receive a Desktop Alert notification, see If it only occurs to part of the emails outside Inbox folder, this might be an expected as Outlook will only display New Email Desktop Alerts for messages that are received in the default Inbox folder of your account(s). Outlook itself is still configured to Display a Desktop Alert but it doesn’t show.
I did notice that there was a notification for it in the new Action Center but that goes a bit unnoticed.
It is also suggested to try repairing Office via Control Panel and check if there will be any improvement. I’m using Outlook on Windows 10 and while new emails successfully arrive in my Inbox folder, I do not get a New Email Alert for them like I used to. If the issue affect all emails, please make sure that you have enabled all notification options for Outlook 2016 in Action Center. By 'email popup notification not working', do you mean the users have never get the desktop alert or only some of the incoming emails have no pop-up alerts?
