WhatsApp Keyword Trigger Automation: Free Auto-Replies That Work 24/7
The simplest, fastest way to automate WhatsApp Business: type a word, get an instant reply. No template approval. No per-message cost. Free forever on PostEngage.ai.
What Is a WhatsApp Keyword Trigger?
A WhatsApp keyword trigger is the simplest building block of conversational commerce. Your WhatsApp Business number listens for incoming messages, and whenever the text matches a word you defined — say PRICE, HOURS, MENU or ORDER — PostEngage.ai sends back a reply you wrote in advance. The customer gets an answer in under one second; you didn't lift a finger.
Because triggers fire inside Meta's 24-hour customer service window (the customer messaged first, so the window is open), they bypass the message template approval queue that slows down marketing broadcasts. That is why a brand-new business can have ten triggers live before lunch — and why the entire feature is genuinely free on PostEngage.ai while competitors charge for it.
7 Real Trigger Word and Response Pairs
These are the exact templates Indian businesses are running today. Copy them, swap the brand details, ship in five minutes.
"Hi! Our most-ordered items: Veg Thali Rs 180, Chicken Biryani Rs 240, Paneer Tikka Rs 220. Full menu attached. Reply ORDER to place one."
Industry: Restaurant
"We're open Mon-Sat 10 AM - 9 PM and Sunday 11 AM - 6 PM. Last entry 30 min before closing. Reply BOOK to reserve a slot."
Industry: Salon / Studio
"Your order #PE-4821 is out for delivery — expected today between 4 PM and 7 PM. Tap below for live tracking: [link]"
Industry: E-commerce
"Here's our full menu (PDF attached). Lunch special today: 2 dosas + filter coffee Rs 199. Reply ORDER followed by item names."
Industry: Cafe / Cloud Kitchen
"Great! Pick a slot: 1) Tomorrow 11 AM 2) Tomorrow 4 PM 3) Day after 10 AM. Reply with the number."
Industry: Services (clinic, salon, tutor)
"Browse our latest collection here: [WhatsApp Catalog link]. New arrivals every Friday. Reply SIZE for sizing help."
Industry: Fashion / D2C
"Sorry you're facing an issue. Quickly tell us: 1) Order ID 2) What went wrong. A human will respond within 30 minutes."
Industry: Any business
How to Set Up Your First Trigger in 5 Minutes
Sign up for PostEngage.ai (free, no card). Connect your WhatsApp Business number via Meta Business Manager.
Open Automations → Keyword Triggers → New Trigger. Pick a match mode: Exact ("PRICE") or Contains ("price me a thali").
Type the reply. Add an image, PDF, or up to 3 quick-reply buttons (e.g. ORDER, MENU, BOOK).
Send yourself a test message. Verify the reply lands within 1-2 seconds and renders correctly on mobile.
Publish. The trigger is now live for every customer who messages your number. Duplicate it for HOURS, ORDER, TRACK, etc.
PostEngage Free Triggers vs Wati, Interakt, AiSensy
All four tools run on the same official WhatsApp Cloud API and Meta still passes through its own per-conversation pricing (Rs 0.27-0.97 for utility/marketing conversations as of May 2026). The difference is the software layer above it: PostEngage.ai removes its own markup on keyword automation so the feature becomes a no-brainer for first-time WhatsApp Business users.
Use Case Stories From Indian Businesses
Cloud Kitchen, Bengaluru
"We set up MENU, PRICE, ORDER and TIMING triggers in 20 minutes. Friday rush used to mean 80 WhatsApp messages we couldn't keep up with. Now 65 of them get instant answers and our team only handles the actual orders."
D2C Skincare Brand, Mumbai
"TRACK and RETURN keyword triggers cut our support inbox by 58%. Customers self-serve on order status, and our agents focus on actual complaints. We pay zero for keyword automation — only AI credits for the harder questions."
Yoga Studio, Pune
"BOOK and SCHEDULE triggers send our class calendar with one-tap booking buttons. Bookings via WhatsApp went from 12 a week to 41 a week without hiring a receptionist."
DPDP & Opt-In Compliance for Keyword Triggers
- Triggers only fire after the customer messages you first — this counts as opt-in under DPDP and Meta's commerce policy.
- Add a STOP keyword that removes the user from future automation (PostEngage.ai ships this by default).
- Display a privacy notice in your WhatsApp business profile explaining what data you store and for how long.
- Every inbound/outbound message is logged with timestamps for audit — DPDP requires you to demonstrate consent on request.
Want to go beyond keyword triggers? Read our WhatsApp AI auto-reply guide, compare no-code WhatsApp chatbots, or learn how Quick Replies speed up your support team.
Free Keyword Triggers, Forever
Unlimited keyword auto-replies on the official WhatsApp Cloud API. 100 AI credits on signup. INR pricing.
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