Task: Receive updates when an email is bounced or opened

n8n workflow JSON:
{"id":"48","name":"Receive updates when an email is bounced or opened","nodes":[{"name":"Postmark Trigger","type":"n8n-nodes-base.postmarkTrigger","position":[690,260],"webhookId":"1422ac7a-62ba-4f7c-8e22-4e8ecb4950ce","parameters":{"events":["bounce","open"],"includeContent":true},"credentials":{"postmarkApi":"postmark"},"typeVersion":1}],"active":false,"settings":{},"connections":{"Postmark Trigger":{"main":[[]]}}}