Mothers' Day WhatsApp Campaign: ₹19,000 in Bookings from 500 Messages
A single seasonal campaign recovered an entire month of missed repeat-test revenue for a single-branch pathology lab in Pune.
₹19,400
revenue in 72 hours
Zero ad spend
500
WhatsApp messages sent
2,200 patient database
17×
return on investment
vs. ₹1,150 tool cost
38
confirmed bookings
7.6% conversion rate
Executive summary
A family-run diagnostic lab in Pune wanted to run a Mothers' Day wellness campaign but had no budget for paid media. Their entire patient database — 2,200 records — was sitting idle. ReviewsFlow helped them identify 500 women patients who had done blood tests 3–12 months earlier, craft a warm WhatsApp message, and route interested patients toward a discounted wellness package. The result: ₹19,400 in confirmed bookings, ₹0 ad spend, and a 17× ROI in under 72 hours.
The challenge
A database of 2,200 patients that had never received a single follow-up
The lab had been operating for 6 years. They had a strong walk-in flow from a nearby residential society and two corporate accounts. But beyond the first visit, patients simply disappeared. The receptionist occasionally made follow-up calls but had no system and no time. Mothers' Day was three days away and the owner wanted to run *something* — but assumed it would require Facebook ads or flyers.
What ReviewsFlow built
ReviewsFlow segmented the database by gender and last-test date, drafted a warm Marathi-and-English bilingual message around Mothers' Day wellness (thyroid + Vitamin D + CBC panel), and automated delivery to 500 eligible women patients. Replies were routed to the front desk via WhatsApp. No app, no login, no complicated setup.
The message that worked
The campaign message was not promotional in tone. It was a care-led reminder: 'This Mothers' Day, invest 10 minutes for your own health. Your last test was 4 months ago. Book a quick wellness checkup — we'll take care of the rest.'
The WhatsApp message included a one-tap reply option (Book / Remind me later / Not interested) making it easy to respond without typing. Patients who replied 'Book' were automatically notified and a booking alert was pushed to the front desk.
Why 500 messages beat 2,200
Sending to the entire database would have included men, very recent patients, and patients with non-relevant test histories. By focusing only on women patients 90–365 days post-visit with a thyroid or general blood test history, the message hit at maximum relevance and minimum spam risk.
What the lab owner said after
'I thought we needed a big marketing budget to do something like this. We spent less than ₹1,200 for the whole campaign and got ₹19,000 in bookings in three days. The patients were happy to hear from us. Some said nobody had ever messaged them after their test before.'
Results
We spent less than ₹1,200 for the whole campaign and got ₹19,000 in bookings in three days. The patients were happy to hear from us.
Lab owner, Pune (single-branch diagnostic lab, 6 years in operation)
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