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SMS marketing: how it works and how to set it up

SMS marketing is sending planned, permission-based text messages to customers and prospects so they act on something specific: book a call, renew, reply, attend. A text lands on the lock screen and tends to be read soon after it arrives, which makes it the channel for messages that matter this week rather than this month. This article answers the broad question of how SMS marketing for business works, which most people also call text marketing: what it is for, how to do it properly from consent to the first send, what to measure, and how a company of 10 to 250 people should approach its first programme on the levelpartner.ai platform.

What SMS marketing for business is for

Email carries detail. A text carries one point and one action. The companies that get value from texting use it for short, timely prompts tied to a decision the customer is already close to making: a review meeting next week, a deadline on Friday, an appointment tomorrow, a quote that expires.

The companies that waste it treat SMS as a second newsletter. They send the same promotional content to the whole list every week, opt-outs climb, and the channel stops working for the messages that actually needed it. It is not cold outreach to bought lists either. Each text is an interruption you have earned, so spend it carefully.

Why text marketing matters when revenue is flat

Most companies with 10 to 250 staff are not short of contacts. They are short of contacts who act. A CRM holding several thousand past enquiries, lapsed clients and unconverted quotes is a dormant asset, and email alone rarely wakes it up because the inbox is crowded.

Business text marketing works on that dormant asset. A mortgage broker reminding past clients about rate expiries, an agency inviting dormant accounts to a quarterly review, a consultant following up a proposal: each is a short message with an obvious next step. The gain comes from response, not reach.

How to do SMS marketing properly

There are four parts, and skipping any one of them causes most of the problems people report.

  1. Permission. Every contact you text for marketing has agreed to receive texts from you, and you can show when and how.
  2. A sending number that carriers trust. In the US that means registering your brand and campaign for 10DLC before sending from a local number. In the UK, sender rules are lighter, but carriers still filter numbers that attract complaints.
  3. A reason for each message. One purpose, one action, sent to the people for whom it is relevant.
  4. A plan for replies. People answer texts. Someone, or an AI agent, has to answer back.

Before you start

  • Contacts with mobile numbers and recorded text consent, imported or collected through your forms.
  • An eligible sending number on the platform, registered for business messaging where your market requires it.
  • Opt-out wording switched on in the SMS compliance settings, so replies such as STOP end marketing texts.
  • One clear first message, written and checked by someone other than the author.
  • An owner for replies in Conversations.

How to set it up

Your first marketing send is a bulk action from Contacts, sent to a smart list of consented contacts.

  1. Go to Contacts.
  2. Select the contacts you want to message, using your consent smart list.
  3. Choose the Send SMS Bulk Action.
  4. Select the sending phone number when required.
  5. Enter your SMS message or insert a snippet.
  6. Review the recipients and message.
  7. Choose Send immediately, Schedule for later or Use Drip Mode.
  8. Configure any additional delivery settings.
  9. Review the campaign before confirming the send.

Send the text to two internal phones before confirming and read it as a customer would. Afterwards, watch Conversations for replies over the next two hours, and check the send's stats in Bulk Actions after 48 hours. Once one-off sends work, move recurring messages into workflows that trigger from events; the guide to automated text messages covers that step.

How to do text marketing well: the three decisions

Every programme comes down to three decisions: who gets the message, what one thing you are asking for, and when it lands. Get those right and the wording matters less than you think.

Audience comes first. A message to everyone in the CRM is almost always wrong, because a past client and a fresh enquiry need different things, so segment by stage in the relationship before you write a word. The ask must be singular: book a call, confirm a time, reply YES or click one link. Timing is the third lever, and a weekday between nine and six in the recipient's time zone is the safe default. The guide to planning a quarter of text sends maps segments to a calendar.

Illustration: a 60-person mortgage brokerage with a dormant database

Say a brokerage has 4,200 contacts whose fixed rates were arranged more than three years ago, and it texts 400 of them a week: "Hi Sam, it's Priya at [firm name]. Your fixed rate may be ending soon. Would a 15-minute review be useful? Reply YES and I'll send times. Reply STOP to opt out." Over eight weeks that would reach 3,200 contacts. If 190 replied YES and 70 reviews were booked, the team would have a steady, manageable flow of conversations instead of one spike. Names and figures are invented.

SMS marketing for small business: the realistic scope

For a smaller firm, the temptation is to text everything. Resist it. Pick two or three moments in the customer lifecycle where a text would change behaviour, build those, and leave everything else on email. A 20-person consultancy might only need a proposal follow-up, a booking reminder and a quarterly check-in. That is enough to show whether the channel earns its place.

How to do SMS marketing for free, honestly

There is no serious way to run business texting at no cost. Every message travels over carrier networks, and someone pays for that. Free tools usually limit you to a handful of messages, add their own branding, or send from shared numbers that carriers distrust.

On the platform, the licence covers the software and messaging usage is billed as you use it, with no minimum, so a quiet month costs little. The cheapest programme is a small, well-targeted one: texting 400 people who care beats texting 4,000 who do not, in cost and in reputation. The article on affordable SMS marketing goes further.

What it replaces and what it costs in time

SMS marketing usually replaces a patchwork: personal mobiles, a standalone bulk sender, an admin phoning clients about appointments, and the quarterly email nobody opens. The personal mobiles matter most, because they leave no record. When texts go through the platform, every message sits on the contact record next to email, calls, pipeline stage and payments, and a colleague can pick up the thread.

Budget two hours a month to plan and write campaigns, and fifteen to thirty minutes a day to handle replies. The reply time is the part companies underestimate.

The mistake most people make

Treating the list as one audience and sending too often. A text that adds nothing trains people to ignore the channel, and the ones who reply STOP are gone for good. One or two marketing texts a month to any one contact is plenty for most service businesses; reminders and confirmations do not count against that, because the recipient wants them. The SMS marketing best practices cover the rules that keep a list healthy.

The common mistake

Sending a campaign and then not watching for replies. A text invites a reply, and an unanswered reply is worse than no message. Put someone on Conversations for the rest of that day.

When not to use it

Do not text news that needs explanation, bad news, or anything with legal weight: fee proposals, mortgage illustrations and terms belong in email or a portal. Do not text people who only agreed to email. And do not use SMS as your main nurture channel for long sales cycles; a text every week for six months will be blocked long before the buyer is ready. For mixing the channels, read how email and SMS work together.

Troubleshooting

Messages are marked as failed. Check the number is a mobile, then check your registration in Settings > Phone System > Trust Center. Unregistered US local numbers are filtered heavily.

Opt-outs spike after a send. The message went to people for whom it was not relevant. Tighten the smart list before the next one.

Replies land with the wrong person. Give every contact an owner, and use a workflow on the Customer Replied trigger to notify that owner of new texts.

Links are not clicked. Long, unfamiliar links look like spam. Use a short link on your own domain and put it at the end of the message.

Frequently asked questions

Yes, with consent. In the UK, marketing texts to individuals generally need prior consent under PECR, with a soft opt-in for existing clients in some cases. In the US, the TCPA and carrier rules require consent and registration. Other countries have their own rules, so take advice on your own lists.

How often should a business send marketing texts?

Treat one or two marketing texts a month per contact as a ceiling, not a target, and add event-triggered messages such as reminders on top. If a send has nothing new to say, skip it.

How long should a marketing text be?

Aim for one segment, which is 160 standard characters. Longer messages are split and billed as several segments. If you need more space, the content probably belongs in email, with a short text pointing to it.

Do I need a separate SMS marketing tool?

No. SMS, contacts, workflows and the shared inbox are part of the same platform licence, and message usage is billed as used at per-country rates. Running texts alongside your CRM keeps consent, conversations and pipeline data on one record.