What is SMS marketing and how can small businesses use it?

SMS marketing is the practice of sending promotional or transactional text messages to people who have opted in to receive them. It is one of the most direct channels a small business can use: open rates regularly hit 95 per cent, and most messages are read within three minutes. For UK businesses in particular, it works because the mobile phone is the one device almost nobody leaves behind.

This guide explains what SMS marketing involves, the rules you must follow, and how to decide whether it is right for your business.

What SMS marketing is and is not

SMS marketing covers any text message you send to a list of opted-in subscribers. That includes special offers, appointment reminders, order confirmations, and short updates. The defining feature is consent: every recipient has given explicit permission, usually by texting a keyword to a shortcode or ticking a box during checkout.

It is not the same as WhatsApp marketing or RCS messaging, both of which use internet-based chat apps. SMS travels over the mobile network and works on every phone, including basic handsets. That universality is its main advantage: you do not need an app, a data plan, or a smartphone to receive it.

The results you can realistically expect

SMS consistently outperforms email on engagement. Industry benchmarks show click-through rates between 20 and 36 per cent, compared to 3 to 5 per cent for a typical email campaign. Conversion rates also tend to be higher because the message arrives at a moment of attention, not in a crowded inbox.

However, there is a trade-off. SMS is expensive per message compared to email, and character limits (typically 160 characters per segment) make it harder to tell a story. It works best as a short, urgent channel: flash sales, appointment slots, limited stock alerts, and time-sensitive updates. For longer-form content, email or a website post is a better fit.

What the law says in the UK

SMS marketing in the UK is regulated by the Privacy and Electronic Communications Regulations (PECR) and the General Data Protection Regulation (GDPR). The key rules are:

• You must have prior consent. You cannot send an SMS to someone who has not explicitly opted in. A pre-ticked checkbox or a buried terms clause does not count.
• You must identify yourself. Every message must include your business name or a recognised brand name so the recipient knows who sent it.
• You must provide an opt-out. Every message must include a simple way to stop, such as a reply STOP mechanism.
• You must keep a record of consent. If a recipient challenges you, you need to show when and how they opted in.

The Information Commissioner's Office (ICO) enforces these rules and can fine businesses that breach them. The guidance is the same as for email marketing: get consent, respect it, and keep good records.

Is SMS marketing right for your small business?

SMS works well if you have a product or service that benefits from timely, short messages. That includes takeaways and restaurants sending offers at lunchtime, tradespeople confirming appointment slots, retailers announcing flash sales, and service businesses sending reminders.

It works less well if your audience is primarily on desktop and your offers need paragraphs of explanation. In that case, email or a blog post is a better first step.

Victory Digital helps small businesses plan and execute multi-channel marketing strategies that combine SEOSEO stands for Search Engine Optimisation — the practice of improving a website's visibility in search engine results pages., content, paid advertising, and owned channels like email and SMS. If you are unsure where to start, the free SEOSEO stands for Search Engine Optimisation — the practice of improving a website's visibility in search engine results pages. report at https://victory.digital/run-a-seo-report gives you a data-driven view of your current performance, and the team can advise on the right channels for your audience and budget.