Mark email unsubscribes from webhook to suppression list

Incoming unsubscribe webhooks can leave unsubscribed addresses in your active mailing lists and cause repeat outreach to parents and schools. They are added to your suppression list.

Overview

Unsubscribe webhooks often sit in inboxes or logs and lead to accidental outreach for school and portrait campaigns. This flow captures those webhooks and immediately records suppressions so campaign managers stop sending to unsubscribed parents before the next mailing.