One of the most common uses for the notification events you can create in a notification plan, is to configure the WinGate Send Mail event processor to send an email to someone notifying them that an incident has taken place, whenever the event is executed as part of the plans schedule.
Read how to create a email notification
When an incident status is set to closed, there is an option in the properties of the notification plan to retrigger all of the notification events that have been already executed in this plan up till the point the incident was closed.
This is done so people who may have previously received a notification email as part of the notification plans schedule, will receive an updated email hopefully informing them that the incident has been closed and is no longer an issue, or no longer requires their attention.
Since all previously executed notification events in the notification plan are retriggered, it means that the same email will be resent by the Send Mail event processor when it reprocesses each event. Creating a dynamic email that will show updated data when it is sent the second time (as part of the stand down) is a simple process.
The Send Mail event processor provides the Insert Symbol button 
which allows you to populate the email with relevant available data from the Symbol Browser.
Since any data symbols placed in the email from the Symbol Browser are dynamic, they will always display the most current data each time the policy is processed. This provides an adequate solution for stand down notifications.
In the example of the Send Mail event processor properties shown above, the {{Incident.Name}} and {{Incident.StateText}} methods have been selected from the Symbol Browser. When the notification event is retriggered, the latest email sent by Send Mail processor will show the relevant incident status of being Closed, updated in the Subject line.
e.g. Subject : Incidents name - Closed
This effectively creates both the initial notification email and the stand down notification email all within the one Send Mail configuration.
The body of the email has also been created to display other relevant updated information. The limit on what type of data you can insert into the email is only limited by what objects have been published to the Symbol Browser and are available for you to select when configuring the Send Mail event processor.
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