There is a limitation to the "SQL Server Error Log" alerts that we wanted to overcome. The actual meat of the error is usually found in the next message in the error log and not the severity line itself. Using the above, you can customize your error log alert to actually send you the error line in the alert email. Custom SQL Alert -> Multiple Numeric Return. This will enable you to filter these based on the error message if you're sending them to a 3rd party tool to handle your alerting.
