Most small businesses already text customers. Appointment confirmations from a personal phone, a reminder about a rescheduled visit, a photo of a finished job. It works, customers like it, and nobody calls it marketing. The trouble starts when somebody suggests doing it deliberately, at which point the questions arrive all at once: whether it is legal, whether customers will find it intrusive, and whether it is worth the setup.

The channel has quietly become normal. SimpleTexting surveyed 1,000 US consumers and 400 US business owners and marketing managers on 7 and 8 January 2026 and found that 85.6 percent of consumers are opted in to texts from businesses, up nearly 40 percent since 2021, while 75.3 percent of businesses now use SMS marketing. Customers have largely made their peace with business texting. What separates the businesses it works for from the ones that annoy people is almost entirely in how it is set up.

What texting is good at, and what it is not

SMS is at its best for time-sensitive, expected, individually relevant messages. Appointment reminders, "the technician is twenty minutes away," "your part arrived," "the quote is ready." These get read immediately and save phone calls, and customers rarely object because each message does something for them.

It is reasonable for occasional offers to people who asked for them. A seasonal service reminder, a cancellation slot, a limited promotion. The tolerance here is much lower and the threshold is relevance.

It is poor for anything long, anything that needed formatting, and anything sent because a schedule said to. A text is an interruption on a device people keep within reach, and the cost of an unwanted one is higher than an unwanted email. Where email gets deleted, a text gets an opt-out and sometimes a complaint.

It is also poor as a first contact. Texting somebody who gave a phone number for a quote three years ago, with an offer they did not ask for, is the behavior that made regulation necessary. Optuno treats texting as a service channel for existing customers first, and keeps promotional messaging to people who have separately opted in to receive it. The businesses that do well treat the channel as a service tool that occasionally carries an offer, rather than a broadcast channel that occasionally helps. That sits alongside email rather than replacing it.

Consent is the part that matters most

Federal TCPA rules require prior express written consent for covered automated telemarketing calls and robotexts, and other federal rules, state laws and carrier requirements can apply on top. For a small business running a recurring promotional program the practical standard is simpler than the legal landscape: collect a clear written marketing opt-in from every recipient and keep the record. A phone number given for a quote is not that, nor is a pre-checked box, nor consent buried in terms nobody opened.

In practice that means an unchecked opt-in with clear wording beside it, naming the business and describing the messages being agreed to. Federal rules also require a disclosure that agreeing is not a condition of buying anything, the element most often left out because it reads like boilerplate. Keep a record of when and how each person opted in; that record is the defense if a complaint arrives.

Transactional messages about agreed work sit differently, but gather marketing consent separately and keep the two lists distinct.

Opt-outs are tightly defined. Under rules effective April 2025, a revocation must be honored within a reasonable period not exceeding ten business days, and accepted by any reasonable means. Replies such as STOP, QUIT, END, CANCEL and UNSUBSCRIBE are specifically recognized, and requests by phone, email or website can be reasonable too. One confirmation message with no marketing content is permitted; sending it within five minutes keeps it inside a regulatory presumption rather than meeting a hard deadline.

What the carriers require, which is not the law

Two separate rulebooks govern business texting and they are easy to confuse. The consent rules above come from federal regulation. What follows comes from the mobile carriers, who can filter or block traffic regardless of whether your consent paperwork is perfect.

Register for application-to-person messaging, usually called 10DLC, before sending anything. There is no volume threshold to cross first. Application-to-person traffic sent to US numbers from ten-digit long codes requires registration of both the brand and the campaign, and unregistered traffic has been filtered or blocked since 2023. Short codes and toll-free numbers run on separate systems with their own requirements. Your platform will walk you through registration, and it typically needs your legal business name, tax identification number, and a description of the messages.

The wording beside your opt-in belongs to this rulebook too. Stating the expected message frequency, and that message and data rates may apply, comes from carrier and platform requirements rather than the federal consent rule. Include both anyway, because your provider will expect them before approving a campaign.

Getting this plumbing right at the start avoids the common outcome where messages are quietly filtered and nobody understands why response rates collapsed.

Setting up so the messages arrive

Do not run an automated marketing program from a personal mobile. It has no opt-out handling, no record keeping, no reporting, and it puts a staff member's number in customers' phones permanently.

Use a business texting platform. It handles opt-outs automatically, keeps consent records, manages the carrier registration above, and gives you a number that is not somebody's personal line. Most integrate with the scheduling and CRM tools small businesses already run.

Mind the timing rules. The federal baseline restricts telephone solicitations to between 8am and 9pm in the recipient's local time zone, and a number of states impose narrower windows, so the working rule is whichever is stricter. For a business covering more than one time zone, schedule against the customer's zone rather than your own.

A quick check of Optuno's free local SEO report gives a snapshot of rankings, listings, and reviews, which is worth having alongside any new channel so you can see where enquiries are already coming from.

What to send, and how often

Lead with usefulness. Appointment reminders reduce no-shows, arrival notifications reduce "where are you" calls, and completion messages with a photo close the loop. These are service messages about work the customer has already arranged. Treat promotional messaging as a separate track and send it only to people who have opted in to marketing texts.

Keep messages short and identify the business in the first few words. Somebody reading a preview on a locked screen should know who is texting and why without opening it.

Send one thing at a time with one action. A text with three offers and two links performs worse than a text with one offer and one link, and it reads as a broadcast rather than a message.

Keep promotional frequency low. For most local service businesses, two to four promotional messages a year, plus whatever service messages the work generates, is plenty. Weekly promotional texting suits retail and food, and almost nobody else.

Review requests are a reasonable use once work is complete, and a text is often the most effective way to ask, provided the request goes to every customer rather than only the happy ones. The rules around that are worth getting right, and how to ask for Google reviews without violating policy covers them properly.

Measuring it and knowing when to stop

Track opt-out rate above everything else. It is the honest measure of whether messages are welcome, and a rising rate means the frequency or the relevance is wrong. Most businesses see a small spike after any promotional send and a flat line otherwise.

Track replies, not just clicks. Texting is a two-way channel, and a message that produces conversations is working even when nothing is clicked. Make sure somebody is watching for replies, because a customer answering a text and hearing nothing back is worse than never having been texted.

Track what the channel produces in bookings, and compare it against the effort. For some businesses SMS becomes the main reminder channel and pays for itself in reduced no-shows alone. For others it stays a small supplement to other lead generation, which is a perfectly reasonable outcome.

Be willing to stop the promotional side and keep the service side. Appointment reminders and arrival notifications almost always earn their place. Promotional texting does not always, and a business that keeps the first and drops the second has not failed at SMS. It has found the part that works. If setting this up alongside everything else is more than the business has capacity for, Optuno's plans include email and SMS marketing with the website and local SEO, with no long-term contracts, no setup fees, and a dedicated contact.

Frequently asked questions

Do I need written permission to text my customers?
For automated marketing messages, yes. Federal rules require prior express written consent that is specific and evidenced, which means an unchecked opt-in with clear wording, a statement that agreeing is not required in order to buy, and a record of when it was given. State law and carrier requirements can add more. A phone number provided for a quote does not by itself permit marketing texts.

Can I text customers from my regular mobile phone?
Manually texting one customer about their own job is a different thing from running an automated marketing program, and it is normal. For a recurring promotional program, use a proper business messaging platform: it keeps the consent and opt-out records you would need if a complaint arrived, handles carrier registration, and keeps a personal number out of every customer's phone.

What is 10DLC registration and do I need it?
It is the registration required for application-to-person traffic sent to US numbers from ten-digit long codes, which is what most small businesses use. Without it, messages are commonly filtered or blocked. Short codes and toll-free numbers use separate systems. Your texting platform handles the process, and it needs your legal business name and tax identification number.

How quickly do I have to honor an opt-out?
As soon as practicable, and within ten business days at the latest under rules effective April 2025. Opt-outs must be accepted in any reasonable manner, including replies like STOP or CANCEL and requests sent by phone, email, or through your website.

How often should a small business send promotional texts?
Two to four times a year suits most local service businesses, on top of the service messages the work naturally generates. Retail and food businesses can sustain more. Rising opt-out rates are the signal that the frequency is too high.

When can I legally send marketing texts?
The federal baseline is between 8am and 9pm in the recipient's local time zone, and several states are stricter. Schedule by the customer's zone rather than your own, since the restriction follows the person receiving the message.