// Case Study
Four interconnected n8n workflows replacing manual lead management at a 3-location Florida optometry practice, with a 2.4-second average WhatsApp response and a big lift in conversion.
The problem
The practice received 500+ monthly WhatsApp inquiries and 50+ web-form leads per week, and lost most of them to slow response. Leads arrived around the clock, but agents worked business hours, creating long delays. Most leads went cold before follow-up, and evening and weekend inquiries went unanswered.
Working a lead properly took over an hour of staff time. Manual handling across three locations created inconsistency and a compliance risk in a medical context.
Two parallel n8n systems handling live chat and multi-channel nurture in one architecture.
A WaSender webhook feeds a custom parser that classifies 9 message types, does a Google Sheets CRM lookup, then runs GPT-4.1-mini with a Pinecone knowledge base and 10-message memory. It responds in 2.4 seconds on average, 24/7, with every interaction logged.
A master orchestration fires email and WhatsApp sequences in parallel: a 4-touch email nurture with dynamic HTML injecting the correct clinic phone number, a 4-touch WhatsApp sequence with reply detection, and an intelligent Gmail monitor classifying intent and generating contextual auto-responses 24/7.
Response time cut from hours to 2.4 seconds average, with full evening, weekend, and holiday coverage.
Conversion rate lifted from 18% to 42%.
After-hours inquiries now fully automated instead of unanswered.
97.8% of WhatsApp conversations handled without human escalation.
Over an hour of manual work eliminated per lead.
The volume increase handled without adding headcount.
Healthcare / Optometry
Two asynchronous n8n workflows replacing the SDR function, with dynamic scheduling and GPT post-call triage.
Healthcare / Optometry
A 24/7 AI phone receptionist for a London optometry clinic handling bookings and cancellations.
HVAC / Home Services
Two voice agents, an SMS engine, and a 5-system booking chain into ServiceTitan in under 10 seconds.
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