Missed call text back: how it works, what to say and the rules
A missed call does not have to be a lost customer. How automatic text-back works, example messages, the US texting rules to follow, and when a text is not enough.
Last updated October 22, 2026
What is missed call text back?
Missed call text back automatically sends a text to someone whose call to your business went unanswered, usually within a minute, so they can reply by message instead of calling the next business. It works best as a short, helpful reply from your business name, with a clear way to opt out and texting registered with US carriers.
How does missed call text back work?
- A call goes unanswered. Your line rings out, is busy, or the caller hangs up before anyone picks up.
- The system spots the missed call. Your phone system or a text-back service sees the unanswered call and the caller’s number.
- A text goes out. Within a minute or so, the caller gets a short message from your business number saying you missed them and how to carry on.
- The conversation continues by text. The caller replies with what they need, and your team or an automated assistant answers, books or calls back.
The point is speed. A caller who reached voicemail may already be dialing the next business; a text that arrives while they are still holding the phone gives them a reason to wait. Texting from the same number they called also means the reply comes from a number they recognize.
What should a missed call text back message say?
A good text-back message is short and does four things:
- Names your business, so the caller knows who is texting.
- Says you missed their call, so it reads as a reply, not an advert.
- Gives one clear next step: reply here, book with a link, or expect a call back.
- Tells them how to opt out, such as “Reply STOP to opt out.”
| Situation | Example message |
|---|---|
| General | “Hi, this is Maple Street Dental. Sorry we missed your call. How can we help? Reply here and we’ll text you back shortly. Reply STOP to opt out.” |
| After hours | “Thanks for calling Rivera Plumbing. We’re closed right now. Text us what you need and we’ll reply when we open at 8am. If water is leaking now, reply URGENT. Reply STOP to opt out.” |
| Busy with customers | “Hi from Studio Nine Salon! We’re with clients and couldn’t pick up. Want to book or change an appointment? Reply with the day that suits you. Reply STOP to opt out.” |
| Professional services | “This is Grant & Cole Law. We missed your call. Reply with your name and a short note on what it’s about, and someone will call you back today. Reply STOP to opt out.” |
Business names in these examples are made up. Keep text-back messages free of discounts, offers and links to promotions: a sales message changes the rules that apply, as the next section explains.
What US rules apply to missed call text back?
This is general guidance, not legal advice. Texting rules depend on what your message says, how it is sent and the states you text into, so have a lawyer review your setup.
The TCPA and FCC rules
The Telephone Consumer Protection Act (TCPA) generally requires anyone sending robocalls or robotexts to have the recipient’s prior express consent, unless it is an emergency or an exemption applies (FCC Order DA 25-312). The FCC has confirmed that a text message sent using an autodialer is a “call” under the TCPA (FCC 24-24). Messages that include an advertisement or are telemarketing need the recipient’s prior express written consent (47 CFR 64.1200(a)(2)).
Opt-outs: STOP and the rest
Under 47 CFR 64.1200(a)(10), a person can revoke consent by any reasonable method. Replying “stop,” “quit,” “end,” “revoke,” “opt out,” “cancel” or “unsubscribe” counts automatically, and other wording counts if a reasonable person would read it as a request to stop. Revocations must be honored within a reasonable time not to exceed ten business days, and you cannot insist on one exclusive way to opt out. Paragraph (a)(12) allows a single confirmation text that only confirms the opt-out, with no marketing; if it is sent within five minutes it is presumed to fall within the person’s consent.
Carrier guidance and 10DLC registration
The wireless industry’s CTIA Messaging Principles and Best Practices (May 2023) sorts business texts into three types. Conversational: the consumer texts first and the business simply responds, so no extra permission is expected. Informational: the consumer gives their number and asks to be contacted, such as for appointment reminders, which needs express consent. Promotional: sales or marketing messages, which need express written consent. A missed call is a voice call, not a text, so a text-back is the first text in the conversation; that is why keeping it short, responsive and non-promotional matters.
Texts sent from a business system over an ordinary 10-digit number are application-to-person (A2P) messages. The Campaign Registry describes 10DLC as an A2P messaging channel in which brands and their messaging providers are verified, and says brands register through a campaign service provider rather than directly. In practice, that means registering your business and your text-back use case through your texting provider before you send.
| Check | Why | Source |
|---|---|---|
| Keep the text-back non-promotional | Advertising or telemarketing texts need prior express written consent | 47 CFR 64.1200(a)(2) |
| Identify your business in the message | The recipient should know who is texting and why | CTIA Messaging Principles |
| Include “Reply STOP to opt out” | STOP and similar replies revoke consent | 47 CFR 64.1200(a)(10) |
| Honor opt-outs fast, and confirm once | Within ten business days at most; one confirmation text, no marketing | 47 CFR 64.1200(a)(10), (12) |
| Send one reply, not a sequence | A single responsive message is closest to a conversational reply | CTIA Messaging Principles |
| Register for 10DLC through your provider | Brands and campaigns are registered through a campaign service provider | The Campaign Registry |
| Get express consent before reminders or offers | Informational texts need express consent; promotional texts need written consent | CTIA Messaging Principles |
General guidance, not legal advice; FCC, eCFR, CTIA and Campaign Registry sources checked on October 22, 2026. State laws may add their own requirements.
When is missed call text back not enough?
Text-back is a useful safety net, but it is still a reply to a call nobody answered. It falls short when:
- The call is urgent. A burst pipe, a no-heat call in winter or severe pain needs a person on the line now, not a text.
- The caller is on a landline. Most landlines cannot receive texts, so the message never arrives.
- The caller does not text back. Some people simply call the next business on the list.
- Someone must still reply. If your team is busy, a text thread can wait as long as a voicemail.
- You need details before booking. Intake questions are slower to work through by text than on a call.
To see how much these missed conversations may be worth, try the missed-call revenue calculator.
How will Perimattic AI Receptionist handle missed calls?
The planned approach is to answer first and text second. Perimattic AI Receptionist is being built to answer every call 24/7 in a natural voice, ask your intake questions, book appointments in your calendar and transfer urgent calls to a person, so far fewer calls are missed in the first place. Callers it could not reach, for example because they hung up before the call connected, are planned to get a text back. You would get a summary and transcript of every call.
Status: Perimattic AI Receptionist is in development; none of this is available to use yet. Sign up or read the product overview.
More on answering every caller
Missed call text back, answered
Do I need consent to text back a missed caller?
It depends on the message and how it is sent. Industry guidance treats a business that only responds to a consumer who contacted it differently from marketing, which needs express written consent. A missed call is not the same as the caller texting you first, so keep the text-back short and non-promotional, include opt-out language and ask a lawyer to review your setup.
What happens if someone replies STOP?
Stop texting them. FCC rules treat replies such as stop, quit, end, revoke, opt out, cancel or unsubscribe as a valid way to revoke consent, require revocations to be honored within a reasonable time not to exceed ten business days, and allow one confirmation text with no marketing in it.
Does missed call text back work for landline callers?
Usually not. Most landline numbers cannot receive text messages, so a text-back to a landline caller will not arrive. Those callers still need a voicemail, a call back or a receptionist who answers the call in the first place.
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