Is SMS Marketing Worth It for a NZ Small Business? Costs, Uses and When to Skip It

Last updated: November 2026 · Written by Adrian Prokopiec, 20 Minute Marketing · 10 min read

This guide is for New Zealand business owners deciding whether to add text messages to their marketing at all. It's not a set-up manual or a legal guide (we have separate posts for both). Instead you'll get a straight answer on costs, the uses that tend to earn their keep, the situations where SMS is a waste of money, and a 20-minute exercise to work out whether the numbers stack up for your business.

Why SMS gets attention (and why the hype needs a pinch of salt)

Text messages land on the one device most people carry everywhere, and they arrive with a buzz rather than sitting quietly in an inbox. That's the whole appeal. A customer who ignores your newsletter will usually glance at a text from the dentist, the mechanic or the café they ordered from.

You'll see some very big numbers quoted about SMS open and click rates, including on pages like Gartner's SMS marketing statistics and Omnisend's roundup of SMS stats. Treat any headline figure with care. Most of those numbers come from overseas, from large retail brands or from SMS vendors with a product to sell, and "opened" is hard to measure for a text in the first place. What matters for you is simpler: will enough of your own customers act on a text to cover what it costs you?

The honest answer is that SMS is excellent for a narrow set of jobs and poor for almost everything else. It's a scalpel, not a megaphone.

What SMS actually costs a NZ small business

There are three costs to weigh up, and only one of them shows up on an invoice.

1. The platform and per-message charges

Most NZ businesses send through a web-based bulk SMS service or the texting feature inside software they already use (booking systems, job management tools for tradies, e-commerce email platforms). Pricing is usually a monthly plan, a per-message rate, or both, quoted in NZD or sometimes in US dollars. A standard text is up to 160 characters; go over that, or use emoji and certain special characters, and many providers bill it as two or more messages. Check the current rate card before you commit, because pricing changes and varies a lot by volume.

2. Your time

Writing a text takes a minute. Building the list, keeping consent records, handling replies and checking results takes longer. If nobody in the business will answer replies within a few hours, two-way texting can hurt you more than help.

3. The cost of getting it wrong

Under New Zealand's anti-spam law, a single commercial text without consent can be spam, and the Department of Internal Affairs (DIA) says failing to comply could mean a fine of up to $500,000. That's not theoretical: in 2020 DIA issued a $30,000 penalty to an online retailer over thousands of unsolicited texts that had no way to opt out. The rules are covered in detail in our guide to SMS marketing laws in New Zealand, so here's the short version (DIA also has an overview of the Unsolicited Electronic Messages Act): you need consent, every commercial text must identify you, and it must offer a working way to unsubscribe.

A worked example (with made-up numbers)

Say you run a physio clinic in Hamilton with 120 appointments a week, and you pay your SMS provider an assumed 10 cents a text. One reminder per appointment costs about $12 a week. If that reminder prevents just one no-show for a $90 session each week, you are well ahead. Plug in your own provider's rate, your own booking volume and your own average job value. If the maths only works when you assume dozens of extra sales from every send, SMS isn't the right channel for that job.

Five uses that usually earn their keep

These are the jobs where SMS tends to beat email and social media, because timing matters and the customer is expecting to hear from you.

Two of these deserve a closer look.

Review requests. A text with a direct link to your Google review form, sent the afternoon a job is finished, is one of the simplest ways to grow your reviews. Pair it with the ideas in our guide to getting more Google reviews, and make sure you have a plan for responding to the occasional bad review too.

Spare spots. Say you run a hair salon in Nelson and a 2pm booking cancels at 11am. A short text to clients who have opted in to "last-minute openings" can fill the chair. An email or Instagram post would probably be seen too late.

When SMS isn't worth it

Skip SMS, or park it for later, if any of these sound like your business:

• You sell slowly considered, high-value services. Someone choosing an architect or a new kitchen won't decide because of a text. Email, a strong website and helpful content do more work here.
• You don't have consent and have no easy way to get it. A list of old customer numbers collected on invoices is not a marketing list. Building it properly takes time.
• You have nothing time-sensitive to say. If your texts would just be "here's our latest blog post", use email. Our post on writing a newsletter people want to read is a better use of that energy.
• Your email list isn't working yet. Email is cheaper per message and gives you room to explain. Get the basics going with your first email list before adding a second channel.
• No one will answer replies. Customers reply to texts. If replies go unanswered, you've created a complaint channel.

SMS vs email: which job goes where?

The short version: email is for detail, stories and regular contact; SMS is for "now" messages. Most businesses that use SMS well use it alongside email, not instead of it. Your email automation workflows can do the heavy lifting (welcome series, follow-ups, newsletters), while a handful of texts handle reminders and urgent updates.

If you're choosing software, check whether your email platform also sends texts before you add another subscription. Our comparison of the best email marketing platforms for NZ small businesses is a good starting point, and our NZ email marketing benchmarks give you a realistic yardstick for the email side.

Once you've decided SMS is worth a go, our step-by-step SMS marketing guide for NZ small businesses walks you through choosing a provider, writing messages and setting up automations.

Decide in 20 minutes: is SMS worth it for you?

Grab a notepad and work through this. It's the same quick test we'd run with any business owner.

1. List your "now" moments (5 minutes). Write down every situation where a customer needs to know something within hours: reminders, arrivals, ready-for-pickup, cancellations, a sale ending today. No "now" moments? Stop here; SMS isn't for you yet.
2. Put a dollar value on each (5 minutes). What does a no-show, a missed pickup or an unfilled spot cost you? Use your average job or booking value.
3. Check your consent (3 minutes). Do you have numbers from people who agreed to receive texts from you? For pure reminders tied to a booking, check with your booking software how it records that. For marketing texts, you need clear opt-in.
4. Get a real price (4 minutes). Look up the per-message rate in your booking or email software, or a NZ bulk SMS provider, and estimate a month of sends.
5. Compare (3 minutes). If one or two saved bookings a month cover the cost, start with reminders only. Review after 60 days using the approach in our guide to tracking marketing ROI.

Add promotional texts later, and plan them in your content calendar so you don't over-send.

How to keep SMS profitable once you start

• Keep marketing texts rare. A few a month is plenty for most businesses. Reminders and updates are different, because customers expect them.
• Clean your list. Remove numbers that bounce and honour opt-outs straight away. The same discipline that keeps you out of spam folders applies here (see cleaning your email list).
• Name your business in the first few words. Customers should know who's texting before they open the message, and the law requires you to identify yourself anyway.
• One message, one action. Book, confirm, reply, or claim. Not all four.
• Send at sensible times. New Zealand is one time zone on the mainland, so a mid-morning or early-evening send works nationally. Avoid early mornings and late nights.
• Measure the result, not the opens. Count bookings kept, spots filled, reviews gained or offers redeemed. Platform guides such as Twilio's overview of SMS marketing explain the reporting options most tools offer.

Frequently asked questions

Is SMS marketing legal in New Zealand?

Yes, provided you follow the Unsolicited Electronic Messages Act 2007. Commercial texts need the recipient's consent, must identify your business and must include a working way to unsubscribe. DIA enforces the Act and can seek fines of up to $500,000.

How much does SMS marketing cost in NZ?

It depends on your provider and volume. Most charge a per-message rate, a monthly plan or both, and longer texts may be billed as two messages. Work out your monthly cost from your provider's current rate card and compare it with the value of the bookings or sales the texts protect.

Can I text customers whose numbers are on old invoices?

Not for marketing unless they agreed to receive marketing texts. Having someone's number because they once bought from you doesn't automatically mean you have consent. Ask for it at the next booking or purchase and keep a record.

Is SMS better than email for small business?

Neither is better overall. SMS is better for short, time-sensitive messages people expect, such as reminders and updates. Email is better for detail, regular contact and nurturing. Most businesses get the best results using both for their own jobs.

How often should a small business send marketing texts?

For promotional texts, a few a month is plenty for most businesses. Reminders and service updates can be more frequent because customers expect them. If your opt-outs rise, you're sending too often or the offers aren't relevant.

Keep reading

• The step-by-step SMS marketing guide for NZ small businesses
• SMS marketing laws in New Zealand: what you must know before sending
• Five email automation workflows every small business should set up
• How to build your first email list from scratch

If you'd rather learn the whole channel properly, our email and SMS marketing course covers both in short lessons of about 20 minutes. For a wider foundation across social, search and email, the Essentials course is where most owners start, and you can compare every option on our digital marketing courses page. If social media is where most of your customers find you, the social media marketing course is the better fit.