Your Business Texts Might Not Be Getting Delivered — And Nobody Tells You

We’ve made the case that texting has replaced voicemail — customers want a text back, not a beep. Here’s the part almost nobody explains when you turn on appointment reminders or missed-call text-back: U.S. carriers now block business texts from unregistered numbers. Not delay them. Not send them to some spam folder. Block them. And there’s no bounce message, no error, no notification. Your software says “sent.” The customer’s phone stays quiet.

What changed, in plain English

When you text a customer *by hand* from your own phone, nothing here applies. But the moment a piece of software sends the message — a reminder, a review request, an auto-reply, a follow-up from your CRM — the carriers classify it as application-to-person (A2P) traffic. Since February 2025, the major U.S. carriers have blocked A2P traffic sent from ordinary 10-digit local numbers that aren’t registered in a shared industry registry. The shorthand for that registration is 10DLC.

Two things surprise owners about this. First, volume doesn’t matter — a two-person clinic sending thirty reminders a week is subject to the same rule as a national retailer. What matters is whether software sent it, not how many went out. Second, the failure is silent by design. Carriers aren’t obligated to tell you they dropped your message, so a business can run a broken texting program for months and simply conclude that customers are unresponsive.

A blocked text doesn’t look like a problem. It looks like a customer who didn’t care.

How to tell if this is happening to you

• Delivery rates that don’t match reality. If your dashboard shows messages sent but replies have flatlined, look at delivery receipts rather than send counts.
• Reminders that “went out” before a no-show. A confirmed appointment where the customer swears they never got the reminder is the classic tell.
• Texts that land on one carrier and not another. Registration status and filtering can differ by carrier, so partial delivery is common.
• A new number, or a number moved between tools. Switching texting platforms without re-registering the campaign is one of the most common ways a working setup quietly breaks.

What registration actually involves

It’s paperwork, not engineering, and your texting provider usually walks you through the form. You register your business (legal name, EIN, address, website) and then each campaign — the category of message you send, with sample text. Published guidance in 2026 generally puts the cost in the range of $30–$60 a month for a small business, plus small per-message carrier surcharges, with approval taking anywhere from a few days to a few weeks. Carrier pass-through fees also rose again in January 2026, so expect the number to drift.

The single biggest cause of rejection is consent documentation. Reviewers want to see where the customer agreed to be texted — the checkbox on your booking form, the line on your intake sheet, the wording on your contact page — and they want your sample messages to match what you actually send. Vague or missing consent details get applications kicked back more than any other issue.

Registration is only half of it

Getting registered decides whether carriers will *carry* your message. A separate body of law — the Telephone Consumer Protection Act — decides whether you were allowed to *send* it. Statutory damages there start in the hundreds of dollars per message, and TCPA filings have reportedly climbed again in 2026. A few practical rules keep you on the right side of both:

1. 1Get consent before you text, and write it down. A checkbox on the form, dated and stored, is worth far more than a memory of a conversation.
2. 2Identify yourself in the message. The first text a customer gets should make it obvious which business is texting them.
3. 3Include opt-out language on marketing texts — “Reply STOP to opt out” — and honor it immediately.
4. 4Honor opt-outs however they arrive. Since a 2025 FCC change, a customer can revoke consent by any reasonable method — a reply, an email, a phone call, a note on your website form — and it has to stick.
5. 5Remove them from everything, not just that one campaign. An opt-out from marketing texts shouldn’t leave them subscribed to three other lists.

Why we’re writing about paperwork

Because it’s the least glamorous way a good system fails. You can do everything else right — answer every call, text back within seconds, run review requests the compliant way — and if the number sending those messages isn’t registered, none of it reaches anyone. It’s the plumbing under the whole thing, and it’s invisible until you check.

The fix is genuinely small: ask whoever runs your texting whether your number is registered and your campaign approved, then send yourself a test from a phone on a different carrier. Ten minutes of asking beats another quarter of wondering why nobody replies. And to be clear — we build websites and AI agents, we’re not attorneys, so treat the consent rules above as a starting point rather than legal advice.