Inbound Lead Response Service: Options, Costs and How to Build One

An inbound lead response service replies to every new enquiry, whether it comes by form, call or text, within about a minute at any hour, then books the lead or passes it to a person. A small Australian business has four ways to get one: build it with an AI agent, use an answering service, use an AI receptionist, or buy a done-for-you system. Volume, channels and budget decide which fits.

This guide compares the four, with prices taken from each provider's own page (as of November 2026), and gives you a first-60-seconds checklist you can copy whichever way you go.

What is an inbound lead response service?

It is the job of answering a new enquiry before it goes cold, done the same way every time. Whoever or whatever does that job has to do four things:

• First touch: reply within a minute or two, by the same channel the lead used.
• Qualify: ask one or two questions to find out what they need and whether you can help.
• Book or hand off: offer a time, or pass the lead to a named person with a short note.
• Record: log the lead and the conversation in your CRM (the system where you keep customer details), so nobody starts from zero.

An autoresponder that says "thanks, we'll be in touch" only does part of the first step. Most vendor pages describe their tool. It helps more to start from the job, then pick the tool that does the most of it for your kind of enquiries.

Why the first minutes matter (and which stats to trust)

Two sets of numbers get quoted on this topic, and they are often mixed up.

The stronger one is from Harvard Business Review in 2011. The researchers sent a test enquiry to 2,241 US companies. 37% replied within an hour, 23% never replied at all, and the average reply took 42 hours among the companies that replied within 30 days. In a separate study of 1.25 million sales leads, firms that tried to reach a lead within an hour were nearly seven times as likely to qualify it as firms that tried even an hour later, and more than 60 times as likely as firms that waited 24 hours or longer (HBR via SmartCompany).

The other set is the "100 times more likely to reach, 21 times more likely to qualify" figure for five minutes versus 30 minutes. That comes from the Lead Response Management Study run with InsideSales, a sales software vendor, from 2007 (Njin summary). It points the same way, but it is older and vendor-run, so treat it as a direction rather than a promise.

Both studies are about US companies, and neither tested small Australian service businesses. The message for you is still clear: the gap between replying in minutes and replying the next day is large. For the full case, see the 5-minute lead response rule and our speed to lead guide.

Four ways to get one: compared

Here are the four options side by side. Prices are the lowest "from" prices on each provider's own page, checked in November 2026. They are examples, not a full market survey, and they change often.

Where those prices come from:

• Build it yourself: Zapier lists a free Agents plan with 400 activities a month and Agents Pro at US$33.33 a month billed annually (Zapier pricing). You will usually also pay for an SMS provider and an AI model, and your own time is the biggest cost.
• Answering service: Business1300 lists 24/7 message taking from A$1 a day, Team Answering from A$36 a month, Virtual Receptionist from A$48 a month and a Virtual Assistant plan with appointment booking from A$33 a month (Business1300).
• AI receptionist: Johnni lists plans from A$49 a month plus GST, or A$44 a month paid annually, with a 7-day free trial (Johnni). Other Australian AI receptionists and their prices are compared in AI receptionist in Australia.
• Done-for-you: Njin, an Australian AI sales agency, lists a speed-to-lead instant reply agent at A$900 setup plus A$400 a month, and a lead qualification agent at A$8,400 setup plus A$2,200 a month (Njin pricing).

The real difference is coverage. An answering service or AI receptionist handles calls. A form enquiry at 9pm still needs a reply by text or email, and a missed call still needs a follow-up if the caller does not book. Only the build-it-yourself and done-for-you routes cover every channel by default.

Not sure which gap is costing you the most? Book a free speed-to-lead audit and we will look at where your enquiries wait today.

Option 1: Build it yourself with an AI agent

A working AI response agent has four layers. You can build each one with no-code tools such as Make, Zapier or n8n.

• Trigger: what fires the agent. A web form, a missed call logged by a virtual number, a Facebook or Google lead form, or a social message.
• Brain: the AI model and a clear prompt. The prompt says who you are, what a good lead looks like, which signals rule a lead out, what tone to use and when to offer a booking.
• Channel: how the reply reaches the lead. Match where they came from: a text for a missed call, an email or text for a form.
• Handoff: what happens next. Log the lead in your CRM, offer a calendar link if they fit, send them to follow-up or a polite no if they do not, and alert a person when the lead is unclear.

Start with your busiest lead source only. Write the prompt, connect the trigger and channel, then submit ten test enquiries yourself before any real lead goes through it. A simple prompt that handles most enquiries well beats a clever one that breaks. The questions to ask are covered in inbound lead qualification automation.

This route costs the least in fees and the most in time. It suits an owner who enjoys setting up tools and will check on them every week.

Option 2: Answering service or AI receptionist

If most of your leads ring, this is the quickest fix. A human answering service has a person answer in your business name and pass on a message, transfer the call or book it. An AI receptionist does the same with software, 24 hours a day, and can often book straight into your calendar. We compare the two in telephone answering service vs AI answering service.

Two gaps to check before you buy. First, most of these services stop at the end of the call: a caller who does not book still needs a follow-up. Second, they do not reply to web forms or ad leads. For enquiries that arrive at night, see after-hours lead response.

Option 3: A done-for-you system

An agency or specialist builds the whole thing inside your CRM: instant reply on every channel, questions, booking, follow-up and reporting, and keeps it running. You pay a setup fee and a monthly fee, so it costs more than the other routes. It suits a business with steady enquiry volume where one extra booked job a month covers the fee, and an owner with no time to build or maintain it.

What a good first 60 seconds looks like

Whichever option you choose, check it against this list. You can copy it into your setup notes.

1. Reply within 60 seconds, by the channel the lead used.
2. Use their name and repeat what they asked for, so the reply is clearly not a form letter.
3. Say who is replying, and say plainly if it is an automated assistant.
4. Ask one question that moves things forward, such as the suburb, the job or the timing.
5. Offer a booking link or two times, if the enquiry is simple enough to book.
6. Alert a named person straight away when the lead is urgent, high value or unclear.
7. Out of hours, say when a person will be in touch, and keep that promise.
8. If there is no reply, follow up at least once, for example the next morning.

Steps 6 and 8 are where most setups fail. If leads still slip through after the first reply, the missed lead recovery workflow shows how to catch them.

Rules to follow in Australia

Fast replies to people who just enquired are usually welcome. Marketing messages are a different matter. This is general information, not legal advice.

The Australian Communications and Media Authority (ACMA) says that to send marketing emails or text messages you must first have consent from each person, even when someone else sends them for you. Every message must identify you as the sender, include your contact details and make it easy to unsubscribe (ACMA).

In practice:

• Put clear consent wording on your forms, especially if you will follow up with offers later.
• Send every text from your business name or a number people can recognise, and add an opt-out to follow-up messages.
• Stop follow-up as soon as someone asks.
• Check your consent wording and sender setup with your own adviser before you switch it on.

How to choose and what to measure

Pick by where your leads come from and how many you get:

• Mostly calls, few forms: start with an answering service or AI receptionist, then add a text follow-up for callers who do not book.
• Mostly forms and ad leads: build or buy an instant text and email reply first. A call service will not help here.
• A mix, with steady volume and no time: a done-for-you system that covers every channel.
• A handful of enquiries a month: reply by hand, fast, and turn on phone notifications. Automate later.

Then measure two numbers every week: the time to first reply, and the share of new leads that book. If the first goes down and the second does not go up, the problem is the conversation, not the speed. Our guide to lead response time shows how to measure both. To see what slow replies cost you in dollars, use the revenue leak calculator.

Most common mistakes

• An autoresponder only. If the lead still waits hours for a real answer, nothing important changed.
• One channel covered, the rest forgotten. A call service with no form reply, or a form reply with no missed-call text.
• A vague prompt. If the agent does not know your services, area and what makes a good lead, its replies sound generic.
• No path to a person. When the system cannot tell whether a lead fits, it needs to send it to someone, not leave it.
• Nobody owns the replies. The lead answers the first message. Decide before go-live who picks up the thread.

Sources

1. Harvard Business Review, via SmartCompany. Are you letting online leads go cold? (2011). https://www.smartcompany.com.au/marketing/20110704-are-you-letting-online-leads-go-cold/
2. Oldroyd, McElheran and Elkington. The Short Life of Online Sales Leads. Harvard Business Review (2011). https://hbr.org/2011/03/the-short-life-of-online-sales-leads
3. Njin. Lead Response Management for Australian Service Businesses (checked November 2026). https://njin.co/resources/blog/lead-response-management
4. Njin. Service pricing (checked November 2026). https://njin.co/pricing
5. Business1300. Telephone answering services (checked November 2026). https://www.business1300.com.au/telephone-answering-services
6. Johnni. AI Receptionist Australia (checked November 2026). https://johnni.ai/
7. Zapier. Plans and pricing (checked November 2026). https://zapier.com/pricing
8. Australian Communications and Media Authority. Avoid sending spam (checked November 2026). https://www.acma.gov.au/avoid-sending-spam