← Blog · Updated October 21, 2026

Missed-Call Text-Back: Setup Guide for Canadian Businesses

A customer calls while you're on a job, with a client or closed for the day. The call rings out, and that person may simply call the next business on their list. Missed-call text-back sends that caller a short, helpful text right after an unanswered call, so the conversation keeps going instead of ending at voicemail. This guide walks through how it works, how to set it up for a Canadian business, how to stay on the right side of CASL, and the message templates and mistakes worth knowing about.

What missed-call text-back is (and isn't)

When a call to your business number goes unanswered, your phone system detects it and automatically sends a text to the caller's number. A good text-back:

• Says who you are, so the caller knows it isn't a random number
• Acknowledges the missed call and asks how you can help
• Offers a next step, such as replying by text or booking a time
• Hands the conversation to a person (or a clearly disclosed AI assistant) when the caller replies

It is not a way to collect phone numbers for marketing. The caller reached out to you about something specific, and the text should stay about that. Treat it as part of customer service, not as the start of a promotional list.

What you need before you start

1. A business phone number that supports texting. Many VoIP and cloud phone systems, and many CRMs with built-in phone numbers, can send and receive SMS. A personal mobile on a standard plan usually can't run automations like this reliably.
2. A way to detect missed calls. Either your phone system has a built-in "missed call" trigger, or it can send call events to an automation tool or CRM.
3. A place to manage replies. Ideally a shared inbox or CRM conversation view, so whoever is on shift can see and answer texts, and every conversation is tied to a contact record.
4. Clear business hours and a booking link (optional but helpful), so the text can point people somewhere useful.

If your current carrier or landline can't text, you have two common paths: move the number to a VoIP or cloud phone provider that supports SMS (porting usually keeps the same number), or enable texting on your existing landline or toll-free number through a provider that offers that feature. Ask any provider to confirm, in writing, that they support SMS on Canadian numbers to Canadian mobile carriers before you switch.

A note on carrier registration in Canada

If you've read US guides, you'll see a lot about 10DLC registration. 10DLC is a US carrier framework for business texting from standard local numbers. It doesn't apply the same way to Canadian numbers texting Canadian phones, but don't take that to mean there are no rules:

• Canadian carriers do filter business (application-to-person) text traffic, and messages that look like spam may be blocked or delayed.
• Toll-free numbers used for texting typically need a verification step through your provider before messages deliver reliably.
• Short codes (5 or 6 digit numbers) in Canada go through their own application and approval process and are usually overkill for missed-call text-back.
• If you also text people in the United States from a US number, US 10DLC registration rules apply to that traffic.

Requirements change, and they vary by provider, so ask your SMS provider exactly what registration or verification they need for your number type and keep a copy of their answer.

Setting it up: step by step

1. Pick the trigger. Decide what counts as "missed": unanswered calls only, or also calls that went to voicemail. Exclude calls that were answered and calls under a couple of seconds, which are often hang-ups or robocalls.
2. Exclude numbers you shouldn't text. Skip blocked or private numbers, landlines where your provider can detect them, known spam numbers, and existing contacts who have opted out.
3. Set a short delay. A delay of about a minute gives the caller time to leave a voicemail and avoids texting someone who called back right away.
4. Write the message using the templates below. Keep it under about 160 characters where you can, so it arrives as a single text.
5. Add business-hours logic. Use one message during open hours ("we'll call you back shortly") and another after hours ("we'll reply first thing tomorrow").
6. Route replies. Send replies to a shared inbox or CRM, notify the right person, and create or update the contact record with the call and the conversation.
7. Add opt-out handling. Make sure replies like STOP, ARRET, UNSUBSCRIBE or "don't text me" stop all further texts, and that the opt-out is saved on the contact record.
8. Cap the frequency. Send at most one text-back per number in a set window (for example, one per day), so someone who calls three times doesn't get three texts.
9. Test end to end. Call from your own mobile, let it ring out, and check the text, the reply routing, the after-hours version and the STOP handling.
10. Review weekly at first. Read the conversations, look for confused replies or opt-outs, and tighten the wording.

If you want AI to help, it fits best after the caller replies: answering common questions from approved information, collecting details, and offering booking times. Disclose that it's an AI assistant, and hand off to a person for pricing disputes, complaints or anything sensitive. For the bigger picture of how text-back fits into a full follow-up system, see AI Lead Follow-Up Automation.

CASL: consent, identification and opt-out

Canada's Anti-Spam Legislation (CASL) covers commercial electronic messages, including texts. Here's a plain-English summary (this is not legal advice; check the CRTC's CASL guidance or a lawyer for your situation):

• Implied consent for inquiries. When someone contacts your business with an inquiry, CASL generally treats that as implied consent to receive related commercial messages for a limited period (six months from the inquiry). A text-back that responds to their call fits this pattern, as long as it stays related to why they called.
• Implied consent doesn't cover everything. It doesn't automatically let you add the caller to promotions, newsletters or unrelated offers. For ongoing marketing texts, ask for express consent, and record it.
• Identify the sender. Each message should clearly identify your business. CASL also requires contact information, such as a phone number, email, web address or mailing address, that stays valid for a reasonable period. In a short text, a link to a page with your full contact details is a common approach.
• Provide an opt-out. Include a simple way to unsubscribe, such as "Reply STOP to opt out," and honour it promptly. CASL requires unsubscribe requests to take effect within 10 business days, but there's no reason to wait; stop immediately.
• Keep records. Log the call that triggered the text, the time it was sent, the message content and any opt-out. If anyone ever asks why you texted them, you can show it was a reply to their call.

Two related points: automated voice calls (robocalls) fall under the CRTC's separate Unsolicited Telecommunications Rules, and if your business is in Quebec or serves Quebec customers, consider offering French messages and recognizing French opt-out words.

Sample message templates

Swap in your own details and keep the tone that matches your business.

During business hours

"Hi, it's [Business]. Sorry we missed your call. We'll call you back shortly, or reply here with what you need. Reply STOP to opt out."

After hours

"Hi, this is [Business]. We're closed right now but got your call. Reply with what you need and we'll get back to you first thing tomorrow. Reply STOP to opt out."

With a booking link

"Thanks for calling [Business]. Sorry we missed you. Reply here, or book a time that suits you: [link]. Reply STOP to opt out."

Trades and field services

"Hi, [Business] here. We're on a job and missed your call. Reply with your address and what you need help with, and we'll get back to you today. Reply STOP to opt out."

Opt-out confirmation

"You've been unsubscribed from [Business] texts and won't get more messages. Call us at [number] anytime."

Mistakes to avoid

• Texting every missed call forever. Cap frequency, and don't text numbers that have opted out or that are obviously not customers.
• Turning a reply into a promotion. Adding discounts and unrelated offers to a missed-call text stretches implied consent and annoys people.
• Leaving out who you are. An unidentified text from an unknown number looks like a scam and is more likely to be ignored or reported.
• No one watching the replies. The text promises a response. If replies sit unread, the automation makes things worse, not better.
• Pretending a bot is a person. If AI is replying, say so.
• Skipping the after-hours version. "We'll call you back shortly" at 11 pm sets the wrong expectation.
• Not testing opt-outs. Check that STOP actually works before you go live, and re-test after any system change.
• Using a personal phone. Business texts from a staff member's own phone are hard to track, hard to hand off and hard to keep records for.

Measuring whether it's working

Measure your own numbers rather than relying on industry claims. Useful ones to track: how many calls go unanswered each week, how many text-backs get a reply, how many of those turn into booked jobs or appointments, average time to a human response, and the opt-out rate. Compare a few weeks before and after you launch.

Getting help with setup

Missed-call text-back is one of the first automations we set up for clients, alongside CRM pipelines and lead follow-up. It's included in our Ignite package, and you can see the rest of our AI bots and automation services. If calls are your main lead source, pair it with an AI receptionist that can answer some calls in the first place.

FAQ

Is missed-call text-back legal in Canada?

Generally yes, when it's a relevant reply to someone who called you, identifies your business, includes contact details and offers an easy way to opt out. CASL still applies, so keep the message related to their inquiry and honour opt-outs.

Do I need 10DLC registration in Canada?

10DLC is a US framework. Canadian numbers texting Canadian phones don't go through 10DLC in the same way, but carriers still filter business texts and toll-free numbers usually need verification. Ask your SMS provider what applies to your number.

Can I add callers to my marketing list?

Not automatically. A call is an inquiry, which supports related follow-up for a limited time. For ongoing promotional texts, ask for express consent and record it.

Should the text come from AI?

The first text is usually a simple template. If AI handles replies, disclose that clearly and make it easy to reach a person.