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Keep in mind that there is some opportunity for a sort of "defense of depth" or just plain confusion, depending on what side you want to err on (more notifications or less notifications): any email notification triggered by this event could contain overlapping conditions.
Email Notification
We had an existing resolution notification which we replaced. The new notification fires upon receipt of the plugin's canned event "task.send_survey". We included conditions which match (overlap) with those of the survey conditions, since future state could conceivably include this event being fired for other tasks.
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