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Check for Notifications with Logged Errors. From the Crows Nest menubar, navigate to Settings > Options > Notifications, and click View Notification Queue. Look for the Error check box and ErrorMessage columns. If there are error messages, click the “Clear Notification Errors” button to clear the errors and have Crows Nest reprocess them. If you would prefer to completely remove the Notifications from the queue, you can click the “Clear Notification Queue” button to delete all Notifications with errors.
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Check Crows Nest Email
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Service. If there are notifications without error messages, then make sure the Crows Nest Email Service is running. On your server, open the Crows Nest Email Service to see the configuration and stop/start the service. To learn more, see Configuring Crows Nest Email Service.
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Check Event Viewer. If the Email Service is running and you are still getting errors, try looking in the Event Viewer log under Applications\Crows Nest. Email support@crowsnestsoftware.com for further help.