Here's a number worth sitting with: almost every text message gets opened, and most get read within minutes. Compare that to email, where a decent open rate is a minority of the list, or social posts, where the algorithm shows your update to a sliver of your followers. Nothing else you can send reaches a customer as reliably or as fast as a text.
Now here's the other half of the story: SMS is the most tightly guarded marketing channel in America. There's a federal law with per-message penalties, a carrier registration system that blocks unregistered business texting, and filtering that will silently kill your messages if you act like a spammer.
Most articles treat the rules as an annoying tax on a great channel. That's backwards. Texting works because it's guarded. The reason people actually read texts is that their text inbox isn't a landfill like their email inbox, and it isn't a landfill because the rules have teeth. Every regulation in this post is the reason the channel is worth using at all. Play by them and you get access to the most-read inbox your customers own. Cut corners and you get filtered, fined, or both.
Here's the plain-English version of how to do this right. Not legal advice, and the rules do evolve, so we'll link the official sources as we go.
Rule one: consent comes first, always
The foundational law is the Telephone Consumer Protection Act (TCPA), administered by the FCC. The TCPA dates to 1991 (it predates texting; courts and the FCC apply it to SMS), and the core idea is simple: you need the recipient's consent before you send automated texts, and the type of consent required depends on the type of message.
The practical breakdown:
- Marketing or promotional texts (offers, promotions, "20% off duct cleaning this month") require the strongest form of consent: the customer's prior express written consent. "Written" includes electronic, like checking an unticked box on your website form or texting a keyword like JOIN to your number. The key features are that it's affirmative, it's documented, and the customer was told what they were signing up for.
- Informational and transactional texts (appointment reminders, "your tech is on the way," "your invoice is ready") sit under a lighter consent standard. A customer who gave you their number in the course of doing business has generally consented to texts about that business relationship. This is why appointment-reminder texting is the safest and best place for any service company to start.
- No consent, no text. Cold texting a purchased list of strangers is the fastest route to legal exposure that exists in small business marketing. TCPA violations carry statutory damages per message, courts have allowed treble damages for willful violations, and there's an active industry of plaintiffs' attorneys who specialize in exactly this. One blast to a bought list can create liability that dwarfs your annual revenue. Don't.
Two habits make consent bulletproof in practice: document it (keep the timestamp and source of every opt-in; your texting platform should do this automatically), and say what they're getting at signup ("Msg frequency varies, msg and data rates may apply, reply STOP to cancel" is the standard disclosure pattern you've seen a hundred times, and it exists for a reason).
A2P registration: the gate you didn't know existed
This is the part that blindsides owners. Even with perfect consent, business texting in the US now runs through a registration system, and if you're not in it, your messages get filtered before they ever reach a phone.
The plain-terms version: US carriers distinguish between person-to-person texting (you texting your buddy) and application-to-person texting, called A2P, which is any business sending texts through software. For businesses texting from regular 10-digit local numbers, the carriers built a registration framework (you'll see it called A2P 10DLC) where the business identifies itself: legal name, EIN, what kind of messages it sends, and sample content. Registered traffic gets reliable delivery. Unregistered traffic gets throttled, filtered, or blocked outright, and the screws have tightened every year.
What this means for you practically:
- You can't just bulk-text from a random app and expect delivery. Reputable texting platforms walk you through brand and campaign registration when you sign up. If a vendor doesn't mention registration at all, that's a red flag, not a convenience.
- Registration asks for real business identity. Legal entity name matching your EIN, address, website. Mismatches cause rejections, so have your paperwork consistent before you start.
- It takes days, not minutes, and costs a little. Small one-time and monthly fees, set by the registration ecosystem and carriers. Budget for it and start before you need to send.
- Send from your own number, ideally one customers recognize. A consistent, registered, business-owned number builds carrier trust and customer trust at the same time. Shared or borrowed numbers mean your delivery reputation is hostage to whoever else is texting from the pool.
Annoying? A little. But this system is exactly why the channel still works. The carriers are actively keeping junk out of the inbox you're trying to reach. Registration is your side of that bargain.
Frequency: the unwritten rule that gets you "banned" by humans
The law and the carriers are only two of the three gatekeepers. The third is the customer's thumb, hovering over the block button, and it's the least forgiving of all.
Text is an intimate channel. The same person who tolerates four promotional emails a week will drop you over two promotional texts in a month. The norms that keep opt-out rates low:
- Texts should be rare and valuable. For a local service business, a good texting program is mostly transactional (reminders, on-my-way, review requests) with promotional sends measured in single digits per year. The seasonal tune-up offer in April. The post-storm inspection offer. That's about it.
- Every message should pass the "glad it buzzed" test. "Your appointment is tomorrow at 9" passes. "Reminder: we also do gutters!" on a random Tuesday does not.
- Respect the clock. Don't send marketing texts early morning or late night; stick to normal waking hours in the recipient's time zone. (Telemarketing rules set quiet-hour boundaries, and common sense sets tighter ones.)
- Keep it short and identify yourself. First line says who you are. Nobody saves your number; assume every text needs your business name in it.
High opt-out and complaint rates aren't just lost subscribers, either. Carriers watch those signals, and a campaign that generates complaints gets filtered harder. Annoying people is a delivery problem, not just a manners problem.
Opt-outs: honor them instantly and gracefully
Reply STOP has to work, period. Every legitimate texting platform handles the standard keywords (STOP, UNSUBSCRIBE, CANCEL, etc.) automatically: the customer gets one confirmation message and then nothing, ever, unless they opt back in. The FCC has reinforced that revoking consent must be easy and honored promptly, through any reasonable means, so don't get clever about it; if a customer replies "please stop texting me" in plain English instead of the magic keyword, that counts too. Flag it, remove them, move on.
A few related hygiene points:
- HELP should work and return your business name and contact info.
- Opt-out applies to marketing, but read the room. If someone opts out of promos, you can generally still send the transactional texts tied to active jobs, but if someone is clearly saying "never text me," honor the spirit, not just the letter.
- Never re-add an opted-out number because they booked another job. Re-consent explicitly or leave them on email.
For the official word on all of the above, the FCC's consumer guides on unwanted texts and robocalls cover the TCPA side, and the FTC covers deceptive marketing rules that apply to the content of any message you send, text included. Both are short reads. When in doubt about your specific situation, a quick conversation with a lawyer is cheaper than a single demand letter.
What a clean SMS program looks like for a local service business
Pulling it together, here's the boring, bulletproof version we recommend, and it maps to how the best home service operators already run:
- Registered business number, registered campaign, through a real platform. Your own number, not a shared pool.
- Consent captured at booking, with a checkbox and disclosure on your website form, plus documented verbal-to-written confirmation for phone bookings.
- Transactional backbone: booking confirmation, day-before reminder, on-my-way text, post-job review request. These four messages alone cut no-shows and grow reviews, and customers actively like them.
- A handful of promotional sends a year, seasonal and genuinely useful, to marketing-consented contacts only.
- Automatic STOP/HELP handling and a suppression list that nothing can override.
That's it. No growth hacks, no blasts. A program like this builds an asset that compounds the same way an owned email list does, on a channel with near-total read rates, and it never puts your business number's reputation or your legal standing at risk.
The guardrails aren't the obstacle. The guardrails are the moat. Every spammer they keep out preserves the attention you're being invited into.
Done-with-you websites, with the texting handled right
Omnyra is a veteran-owned shop in Wilmington, NC. We build websites done-with-you, live on a call: first draft in 24 hours, live in 7 days guaranteed, 1,500+ small business sites built in the last 90 days, including portfolio clients like airsupporthvac.com and ramartrans.com.
Tiers start at $500, with pay-in-4 and Klarna available. Our Max tier includes compliant follow-up texting from your own business number, registration, consent capture, and opt-out handling included, so you get the channel without the landmines.