Here's the moment it's built for. A homeowner has water on the basement floor. They call you. It rings five times and goes to voicemail. They don't leave a message. They go back to Google and call the next plumber.
Missed call text back sends that caller a text within a few seconds of the missed call, something like: "Sorry we missed you. This is Valley Plumbing. What's going on? We'll call you right back." Many people who won't leave a voicemail will answer a text. Now you have a conversation instead of a lost lead.
How it works
There are three pieces:
- Detecting the missed call. Your business number (or a forwarding number you send unanswered calls to) is on a phone system that knows when a call wasn't answered or went to voicemail.
- Sending the text. The system texts the caller's number from your business number, or from a number tied to your business.
- Getting the reply to you. When the caller writes back, the reply lands in an app, your email, or your phone, and you or an assistant carries the conversation.
Most products only do step 2 and leave the reply to you. That works if you're quick to answer texts. If you're on a job all day, the text buys you time, but someone still has to respond.
Text back vs. an AI receptionist
These are often sold together, and they solve slightly different problems.
| Missed call text back | AI receptionist | |
|---|---|---|
| When it acts | After the caller hangs up | While the caller is still on the line |
| What you get | A text thread you have to follow up on | Name, address, problem, and often a booked visit |
| Works for callers who | Prefer texting, or hang up on voicemail | Want to talk to someone right now |
| Typical cost | Low per message, plus carrier registration | Monthly plan, usually priced by minutes or calls |
The strongest setup uses both. The AI answers the calls it can. If a caller hangs up before talking, the text goes out. That's how Connie is designed: the receptionist answers your missed calls today, and hang-up text back is Coming at launch. For a full look at the answering side, see AI receptionist for contractors.
The part nobody mentions: carrier registration (10DLC)
In the US, if a business sends texts from a regular 10-digit phone number, the major carriers require that number to be registered. This system is called A2P 10DLC (application-to-person, 10-digit long code). Unregistered business texts get filtered or blocked. Any text back product should handle this for you, but you'll pay for it and it takes time.
What registration involves:
- A brand. Your business's legal name, EIN (or sole proprietor details), address, and website.
- A campaign. A description of what you'll text and why ("replies to customers who called us," "appointment reminders"), with sample messages and how people opt out.
- Review. The campaign is vetted. Approval can take days to a couple of weeks. Rejections usually come from vague descriptions or a website that doesn't match the business.
The fees are set by the carriers and the registry, then passed through by your texting provider. As one example, Bandwidth's published schedule lists a $9 one-time brand fee and a monthly campaign fee of $20 for a standard campaign or $3 for a low-volume campaign, with a three-month minimum on most campaigns1. Other providers' totals differ, and some add their own markup. Ask for the exact number before you sign up. Connie passes these fees through at cost and shows you the amount before you turn texting on.
Consent and the law (plain-English basics, not legal advice)
The federal rule that covers business texting is the TCPA, and states have their own rules on top. The practical points for a contractor:
- A text that answers someone's call is different from a marketing blast. The person contacted you first, and you're replying about their request. That's the safest kind of business text.
- Keep the text-back message about their call. No coupons, no "follow us on Facebook," no newsletter signup. Promotional content changes the rules.
- Honor STOP every time. If someone replies STOP, they get no more texts. Your provider should do this automatically.
- Identify your business in the first message.
- Don't text numbers that didn't call you, like a list you bought or got from a lead vendor, without the right consent.
If you plan to use texting for reminders, reviews, or promotions later, talk to someone who knows the rules in your state.
What to say in the text
Short, specific, and human. Good examples:
- "Hi, this is Mike at Northside Heating. Sorry I missed your call, I'm on a job. What's going on? I'll call you back within the hour."
- "This is Valley Plumbing. We missed your call. If water is leaking, shut off the main valve. Reply with your address and what's happening and we'll call you right back."
Avoid: links in the first text (they look like spam), long paragraphs, and promises you can't keep. If you say "within the hour," mean it.
When it's worth it
- You miss a lot of calls during the day and can answer texts between jobs.
- Your callers skew younger or are used to texting businesses.
- Your calls are urgent and callers move fast: plumbing leaks, garage doors stuck open, no heat. A text in 10 seconds can beat the next company's ringing phone.
- Your voicemail box fills up or few people leave messages.
When it's not
- Nobody will reply to the replies. A text back that says "we'll call you right back" and then nobody does is worse than voicemail.
- You rarely miss calls. Check your call log first.
- Most of your missed calls are from existing customers asking about status. They'll call back anyway.
- Your number is a landline you can't register or port, and you don't want a second number.
How much is it worth to you?
Start with your call log. Count unanswered calls from unknown numbers over two weeks, and how many never called back or left a voicemail.
Example only. A plumber misses 8 calls a week, about 35 a month. Twelve of those never call back. If a text back gets even 3 of them to reply, and 2 book a $300 job, that's $600 a month from a feature that costs a few dollars in messages plus registration. Run your own numbers in the missed call cost calculator.
The math is usually lopsided in favor of trying it. The real cost is the follow-up time and the registration wait, not the texts themselves.
Setup checklist
- Pull two weeks of your call log and count the missed calls that never called back.
- Pick a provider and ask: who registers 10DLC, what are the exact fees, and how long does approval take?
- Have your legal business name, EIN, address, and a live website that matches.
- Write a short first message that names your business and invites a reply.
- Decide who answers replies and how fast. Put it in writing.
- Test from a friend's phone: call, hang up, check the text, reply, and see where the reply lands.
If you're in a trade where callers move fast, read answering service vs. AI receptionist for plumbers or see Connie for plumbing and garage door companies. For how AI receptionists compare on texting, see Connie vs. Rosie and Connie vs. Goodcall.