Task: Discover emails published on the Internet with uProc

n8n workflow JSON:
{"id":"117","name":"Get Emails by Domain","nodes":[{"name":"On clicking 'execute'","type":"n8n-nodes-base.manualTrigger","position":[440,510],"parameters":{},"typeVersion":1},{"name":"Create Domain Item","type":"n8n-nodes-base.functionItem","position":[640,510],"parameters":{"functionCode":"item.domain = \"uproc.io\";\nreturn item;"},"typeVersion":1},{"name":"Get Emails","type":"n8n-nodes-base.uproc","position":[850,510],"parameters":{"page":1,"tool":"getEmailListByDomain","domain":"={{$node[\"Create Domain Item\"].json[\"domain\"]}}","additionalOptions":{}},"credentials":{"uprocApi":"miquel-uproc"},"typeVersion":1},{"name":"Email Generic Found?","type":"n8n-nodes-base.if","position":[1050,510],"parameters":{"conditions":{"string":[{"value1":"={{$node[\"Get Emails\"].json[\"message\"][\"generic\"]}}","value2":"@","operation":"contains"}]}},"typeVersion":1}],"active":false,"settings":{},"connections":{"Get Emails":{"main":[[{"node":"Email Generic Found?","type":"main","index":0}]]},"Create Domain Item":{"main":[[{"node":"Get Emails","type":"main","index":0}]]},"On clicking 'execute'":{"main":[[{"node":"Create Domain Item","type":"main","index":0}]]}}}