WhatsApp Auto Reply for Small Business Singapore

The enquiry you missed last night

It came in at 11:48pm. A potential customer asked about your Saturday slot, your price, whether you're near an MRT. You were asleep. By morning, they had already booked somewhere else.

For most Singapore small businesses, WhatsApp is the default channel. Customers do not email. They do not fill in forms. They open WhatsApp, type a question, and expect a reply within minutes — even at midnight, even on a Sunday.

This article explains every practical option for WhatsApp auto reply for small business in Singapore: what each one does, what it costs, and which type of business it suits.

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Option 1: WhatsApp Business away messages (free, limited)

If you are using the free WhatsApp Business app, you already have access to a basic auto reply. You can set:

• Away messages — sent automatically outside the hours you define (e.g., after 7pm and before 9am).
• Greeting messages — sent to anyone who contacts you for the first time.
• Quick replies — keyboard shortcuts so you can tap out common answers fast (not auto, but faster).

This costs nothing extra. It takes about ten minutes to set up in the WhatsApp Business app settings.

What it cannot do: It sends one fixed message to everyone, regardless of what they asked. It cannot answer "what is your price for a facial?" or "do you have slots this Saturday?" It just tells the person you will reply soon — which is fine, as long as you actually do reply promptly during business hours.

Best for: sole proprietors and very small businesses where the owner checks WhatsApp every morning and can personally reply to every message within a few hours.

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Option 2: WhatsApp Business API with a keyword-based bot

The next level up is the WhatsApp Business API, which lets third-party software connect to your WhatsApp account. With a keyword bot, you define triggers: if someone types "price", it replies with a price list; if someone types "location", it replies with your address and a Google Maps link.

This is more useful than a simple away message, but it has a ceiling. Real conversations are messy. A customer in Tampines types "how much for two pax dinner" and the bot does not know whether to trigger "price" or "menu" or "reservation". It either says nothing or gives a generic fallback reply — which frustrates the customer.

Cost: API access itself is not free. Pricing depends on the platform you use and the number of conversations. For Singapore SMEs, expect to pay roughly S$50–S$150 a month depending on message volume, plus setup fees that vary by provider.

Best for: businesses with very predictable enquiries — a carpark, a storage facility, a laundry service — where customers really do use the same five or six phrases.

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Option 3: AI-powered WhatsApp auto reply

This is where the gap closes. An AI assistant reads the actual question, understands intent, and replies in natural language — at any hour, in English, Mandarin, or a mix. It does not need the customer to use a specific keyword.

For example, SmartFAQ, the WhatsApp AI assistant Aureus builds for Singapore businesses, is trained on your own business information, your services, prices, location, opening hours, FAQs, and any policies you want it to handle. When a customer sends a question at 11:48pm, it reads the question and replies specifically — not with a template, but with an answer drawn from what you have told it about your business.

What this looks like in practice:

A two-outlet hair salon in Tampines receives 60 to 80 WhatsApp messages on a typical weekend. The receptionist handles walk-ins and phone calls; WhatsApp piles up. With an AI assistant, 70 to 80 percent of those messages — pricing queries, slot availability questions, product enquiries — get answered immediately without anyone on the team touching a phone.

For messages that need a human (booking confirmations, complaints, anything sensitive), staff can take over any chat at any point. The AI steps back. The transition is invisible to the customer.

Cost for SmartFAQ:

• S$399 one-time setup
• S$50/month for 1,000 AI replies
• S$90/month for 2,000 AI replies
• S$200/month for 5,000 AI replies across up to 3 outlets
• No GST (Aureus is not GST-registered)

Those reply counts reset monthly. For most single-outlet Singapore SMEs, the 1,000-reply plan handles a realistic volume of incoming enquiries.

PDPA note: Your customers' chat data passes through your configured system. Make sure your privacy notice covers automated processing of personal data in line with PDPA requirements. This is a practical point, not legal advice — check with a PDPA-registered consultant if you are unsure.

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Comparing your options

Option	Cost	Answers real questions	Works after hours	Needs tech setup
WhatsApp Business away message	Free	No	Sends fixed text only	Minimal
Keyword-based bot (API)	~S$50–S$150/month + setup	Partially	Yes	Moderate
AI assistant (e.g., SmartFAQ)	S$50–S$200/month + S$399 setup	Yes	Yes	Done for you

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What actually drives the cost up or down

For AI-powered WhatsApp auto reply, the main cost variable is reply volume — how many AI-generated replies your account uses per month. A single-outlet clinic with a few dozen enquiries a week will comfortably sit on the S$50 plan. A retail business running promotions, or a multi-outlet F&B group with high weekend traffic, will use more.

Setup cost is a one-time investment. It covers training the AI on your business information, configuring your WhatsApp Business API connection, testing the reply accuracy, and onboarding your team. Shortcuts here cause problems: a poorly trained assistant gives wrong answers, which damages trust faster than no assistant at all.

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Common mistakes Singapore businesses make with WhatsApp auto reply

Sending a reply that ends the conversation. "Thanks for contacting us. We will reply within 24 hours." — this tells the customer nothing and gives them every reason to message a competitor.

Not updating the AI when things change. Your prices go up in January. Your outlet moves in March. If the assistant is still quoting old information, customers arrive with the wrong expectations.

Letting every message go to AI without a handover plan. Complaints, urgent matters, and anything involving a customer's personal situation need a human. Define which triggers escalate to staff and test them before you go live.

Choosing volume too low. If your plan only allows 1,000 replies and you run a promotion that generates 1,200 enquiries in a week, the assistant goes quiet mid-campaign — exactly when you need it most.

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Which option suits your business

• Sole trader or micro-business: Start with the free WhatsApp Business away message. Commit to clearing enquiries every morning. That already beats most competitors.
• Growing SME with repetitive enquiries: A keyword bot from an API-connected platform may be enough — but test it honestly against real customer messages before committing.
• Clinic, salon, F&B outlet, or retail business with consistent message volume: An AI assistant pays for itself quickly when you consider the cost of a missed booking or a potential customer who moved on by morning.
• Multi-outlet business: The S$200/month SmartFAQ plan covers up to three outlets. Coordinating three separate WhatsApp numbers manually is where staff time drains fastest.

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One thing to do before you decide

Spend five minutes in your WhatsApp Business account and count the messages from the last 30 days that arrived outside your working hours. Then count how many got a reply within two hours.

That gap — the enquiries that waited, or never got answered — is the actual cost of not having an auto reply. Not a theoretical cost. A real one, in missed bookings and customers who chose someone else.

If you want to know whether your current website and WhatsApp setup is costing you enquiries, send your website URL to Aureus for a free review. We will look at what is working and what is losing you customers — and we will be specific about it.