{"product_id":"n8n-workflow-qualify-twilio-retell-replies-book-google-calendar","title":"n8n Workflow: Qualify Twilio \u0026 Retell Replies + Book Google Calendar","description":"\u003ch3\u003eAutomatically qualify Twilio SMS + Retell replies, book Google Calendar interviews, and log everything\u003c\/h3\u003e\n\u003cp\u003eThis n8n workflow receives inbound \u003cstrong\u003eTwilio SMS\u003c\/strong\u003e replies, \u003cstrong\u003eTwilio delivery callbacks\u003c\/strong\u003e, and \u003cstrong\u003eRetell call analysis\u003c\/strong\u003e webhooks—then verifies signatures, qualifies candidates with rule-based criteria, and books interview slots in \u003cstrong\u003eGoogle Calendar\u003c\/strong\u003e. It also updates your recruiting systems by writing notes, notifying teams, and logging events in \u003cstrong\u003eSupabase\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eWhat this workflow does\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReceives webhooks\u003c\/strong\u003e from Twilio (inbound SMS or status callback) or Retell (call_analyzed) and loads runtime configuration.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVerifies webhook signatures\u003c\/strong\u003e for Twilio or Retell, rejecting untrusted requests (unless running in preview mode).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNormalizes inbound data\u003c\/strong\u003e into a single event format, detects SMS intent (opt-out, interested, not interested, question, unclear), and ignores non-actionable updates (e.g., delivery receipts or non-final Retell events).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHandles opt-outs\u003c\/strong\u003e by calling a \u003cstrong\u003eSupabase RPC\u003c\/strong\u003e to stop all outreach for the phone number (and optionally prepares a one-time confirmation message).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQualifies candidates\u003c\/strong\u003e using configured \u003cstrong\u003eQUALIFY rules\u003c\/strong\u003e, including structured answers from Retell when present—assigning qualified \/ not qualified \/ needs review \/ no answer outcomes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBooks interviews\u003c\/strong\u003e for qualified candidates by selecting the job recruiter and creating a \u003cstrong\u003eGoogle Calendar\u003c\/strong\u003e event when calendar booking is enabled and the workflow is running in live mode.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQueues writes and notes\u003c\/strong\u003e back to an ATS, notifies recruiters via \u003cstrong\u003eSlack\u003c\/strong\u003e and \u003cstrong\u003eGmail\u003c\/strong\u003e, and logs the inbound event to \u003cstrong\u003eSupabase\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUse cases\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eTurn Twilio SMS replies into a qualified\/no-qualified decision and schedule interviews instantly.\u003c\/li\u003e\n  \u003cli\u003eUse Retell call analysis to validate candidate responses and reduce manual screening.\u003c\/li\u003e\n  \u003cli\u003eEnsure compliant communications by processing SMS opt-outs and recording events centrally.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003en8n nodes\/tools:\u003c\/strong\u003e \u003cem\u003eif\u003c\/em\u003e, \u003cem\u003ecode\u003c\/em\u003e, \u003cem\u003ewebhook\u003c\/em\u003e, \u003cem\u003emerge\u003c\/em\u003e, \u003cem\u003egmail\u003c\/em\u003e, \u003cem\u003esticky note\u003c\/em\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrations:\u003c\/strong\u003e Twilio webhooks, Retell call_analyzed webhooks, Google Calendar booking, Slack notifications, Gmail notifications, ATS note\/queue writes, and \u003cstrong\u003eSupabase\u003c\/strong\u003e event logging + Supabase RPC for opt-outs.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"N8N Commerce","offers":[{"title":"Default Title","offer_id":46123146903731,"sku":"N8N-20113","price":72.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/6279\/6723\/files\/AkNHsmVYlu9ZS1BOBN4O0_1hCCb5pn.png?v=1790673095","url":"https:\/\/buyflowscripts.com\/products\/n8n-workflow-qualify-twilio-retell-replies-book-google-calendar","provider":"N8N Commerce","version":"1.0","type":"link"}