How to set up missed-call text back for a service business

Why text back at all

When a call goes unanswered, the caller usually moves on to the next company within minutes. Calling them back helps less than owners hope, because most people ignore unfamiliar numbers: only 19% of US adults say they generally answer calls from unknown numbers^[1]. A text, by contrast, can be read in a few seconds and answered whenever the person has a moment.

Speed is the other reason. The best-known audit of lead follow-up found that 37% of companies responded to web leads within an hour, 24% took more than 24 hours and 23% never responded^[4]. An automatic text sent within a minute puts you ahead of most competitors before a person on your team has even seen the missed call.

Before you switch it on

1. 01

   Register your business texting

   US carriers expect business texts sent from ordinary 10-digit numbers to be registered as a brand and a campaign. Brands cannot register directly with The Campaign Registry; registration goes through a campaign service provider, usually your phone or texting platform^[2]. Unregistered traffic is likely to be filtered or blocked.

2. 02

   Describe the use case accurately

   Register it as customer care or a similar non-marketing use, describe the missed-call reply honestly and include sample messages that match what you will send.

3. 03

   Decide on consent wording

   Add a line to your website, booking forms and voicemail greeting saying that you may text the number a customer calls from about their request, with opt-out instructions. Have a lawyer review your approach; this guide is not legal advice.

4. 04

   Set up opt-out handling

   Make sure the platform stops all texts to a number that replies STOP or similar words, sends one confirmation and records the opt-out.

5. 05

   Test with your own phones

   Call from a mobile, hang up, and check the text arrives, reads well and handles replies and opt-outs.

Message templates

Keep the message short, name the company in the first words, give the caller something to do and include opt-out wording. Do not add offers, links to promotions or review requests; those can turn a service reply into a marketing message with different consent rules.

• During open hours: “Hi, this is [Company]. Sorry we missed your call. Reply with your address and what's going on and we'll get you booked, or call us back at [number]. Reply STOP to opt out.”
• After hours: “Hi, this is [Company]. We're closed right now. For an emergency such as no heat or an active leak, call [on-call number]. Otherwise reply with your address and the problem and we'll get back to you from 7:30 a.m. Reply STOP to opt out.”
• When the line was busy: “Hi, this is [Company]. All our team were on calls when you rang. We'll call you back in a few minutes, or reply here if texting is easier. Reply STOP to opt out.”

If you include an emergency instruction, keep it consistent with your phone greeting, and never tell someone with a gas smell to wait for a reply; tell them to leave and call 911 or the gas utility.

Send timing and filters

• Send within one to two minutes of the missed call. Later than that, the caller may already have booked elsewhere.
• Send once per caller per day. Repeat callers who keep missing you should get a callback from a person, not more texts.
• Skip numbers you know are landlines, vendors, spam or blocked callers.
• Skip callers who left a voicemail that someone has already returned.
• Do not send further follow-up texts late at night; if someone replies at 11 p.m., answer their question, but save reminders for the morning.

Almost every caller can receive the message: 98% of US adults own a cellphone and 91% own a smartphone^[5]. The bigger risk is not delivery but tone. A text that reads like an ad gets ignored or reported as spam, which hurts your registration's standing with carriers.

Opt-outs done properly

CTIA's Messaging Principles and Best Practices recommend stating in the message how to opt out, using standard STOP wording, but also acting on normal-language requests such as stop, end, unsubscribe, cancel, quit or “please opt me out”^[3]. Senders should acknowledge an opt-out with one final confirmation message and send nothing further after it.

Store opt-outs in your texting platform and, if possible, flag them in your field service software too, so a CSR does not text the customer manually a week later.

Message types and consent

CTIA describes three kinds of business texting^[3]. Conversational messages are replies when the customer texts first. Informational messages, such as appointment reminders, are sent after the customer gives their number and agrees to be contacted for that purpose. Promotional messages contain sales or marketing content, and the customer should agree in writing before receiving them.

A missed-call reply sits close to the line between conversational and informational, because the customer contacted you first but did not text. Keep it to one service reply about their call, make your texting practice visible in your greeting and on your site, and get advice on your exact setup. Our guide to TCPA rules for calling and texting covers the legal side in more depth.

Who answers the replies

A text-back system is only as good as the reply. Decide who watches the inbox during open hours, after hours and on weekends, and set a response target, such as five minutes during the day. Give whoever answers the same booking rules as your phone team, and log every conversation to the customer record. A caller who replies with their address and problem and then hears nothing for three hours is worse off than one who never got a text.

Common setup mistakes

• Sending from a number customers do not recognize. Text from the same business number they called, so the conversation stays in one thread.
• Launching before registration is approved, then wondering why replies never come.
• Adding a review link or seasonal offer to the reply, which changes the message type and annoys people who just wanted help.
• Texting every missed call, including vendors, spam and your own techs, which wastes messages and raises spam complaints.
• Forgetting to update the after-hours template when your on-call number or hours change.

Check the templates every season against your phone greeting and website, so all three say the same thing.

Example: a cleaning company's first month

Example: a fictional residential cleaning company misses about 30 calls a week while its two owners are on jobs. After registering its texting campaign, it sends the open-hours template within a minute of each missed call. Many callers reply with their address and home size, and the owners answer between jobs. Over the first month, the company books a meaningful share of those replies as first cleans, and a handful of people reply STOP, which the platform handles automatically.

What to measure

1. Texts sent per week and the share delivered.
2. Reply rate, and median time from reply to your team's answer.
3. Jobs booked from text conversations.
4. Opt-out rate; a rising rate usually means the wording or frequency needs work.

Review the numbers monthly and adjust the templates one change at a time. For the registration details, see our guide to A2P 10DLC registration for contractors.