How to Use AI to Write SMS Follow-Ups That Actually Get Replies

Email open rates for small business marketing sit around 20–30% on a good day. SMS open rates are consistently above 90%, and most texts are read within three minutes of being received. If you're only following up by email, you're leaving most of your follow-up messages unread.

That said, SMS is also the channel where it's easiest to annoy people. A bad text feels intrusive in a way a bad email doesn't. The difference between a welcome text and an unwanted one usually comes down to whether the message is relevant, brief, and timely.

Here are the four follow-up situations where SMS performs best for service businesses — and the AI prompts to write them.

Why SMS Beats Email for Follow-Ups

Beyond the open rate difference, SMS has two other advantages for service businesses. First, the reply barrier is lower — a short text reply is much less effort than composing an email response, so you get faster answers to questions like "are you still available Friday?" Second, SMS threads feel personal. Your message shows up alongside texts from friends and family, which means it carries a different tone than a formal email landing in an inbox.

The key constraint is length. Most SMS platforms support 160 characters per message. Some support longer, but the habit of being brief is a feature, not a limitation — it forces you to say only what matters.

The Post-Appointment Thank You

Sending a thank-you text within a few hours of completing a job accomplishes three things: it confirms the job is done, it signals that you care about the experience, and it opens the door for the customer to mention anything that wasn't quite right before they post about it publicly.

Prompt to use:

"Write a short thank-you SMS (under 160 characters) to send to a customer after completing a [type of service] job. It should thank them by first name if possible, confirm the work is done, and invite them to reach out if they have any questions. Tone: warm and brief — like a text from a person, not a corporate notification."

Example result: "Hi [Name], thank you for having us today — your [job] is all done! Let us know if you have any questions. – [Your name], [Business]"

The Quote Follow-Up

When a prospect has gone quiet after receiving a quote, a text often gets a response where an email doesn't. The key is referencing the specific conversation rather than sending a generic "checking in" message.

Prompt to use:

"Write a short SMS follow-up (under 160 characters) to send to a prospect who received a quote from my [type of business] 3 days ago and hasn't responded. The quote was for [brief description of the job]. The message should be friendly, reference the quote, and ask if they have any questions — not pushy, just opening the door. Sign it with a first name."

Send this once, three days after sending the quote. If there's no reply after a second follow-up a week later, move on — you've done the work. Don't keep texting someone who isn't engaging.

Re-Engaging Gone-Quiet Leads

Every business has a list of people who expressed interest, got information, and then disappeared. These leads aren't necessarily lost — life got in the way, the timing wasn't right, or they simply forgot to follow up. A well-timed re-engagement text can recover a meaningful percentage of them.

Prompt to use:

"Write a re-engagement SMS for a lead who contacted my [type of business] about [service type] roughly [timeframe] ago but never booked. The message should reference what they were interested in, mention something timely if possible (e.g., upcoming season, current availability), and make it easy for them to reply. Under 160 characters, conversational tone."

The timing matters here. A re-engagement text sent 3–4 weeks after the initial inquiry often lands when the prospect is thinking about the problem again. Too long and you seem like you're scraping the bottom of the barrel; too soon and it feels like pressure.

The Review Request

A text review request sent within 24 hours of a completed job gets a significantly higher response rate than a request sent a week later. The experience is fresh, the customer is satisfied, and the effort to leave a review feels proportionate.

Prompt to use:

"Write a short SMS review request (under 160 characters) to send to a customer after completing a [type of service]. It should thank them, briefly ask if everything went well, and include a gentle ask to leave a Google review — with a link placeholder [LINK]. Don't beg or over-explain. Friendly and brief."

Send the review link directly — don't ask them to find your profile themselves. Every extra step reduces the likelihood they'll complete it. See our guide on responding to Google reviews for what to do with the reviews once they come in.

A Note on Consent

In Canada, sending commercial text messages requires consent under Canada's Anti-Spam Legislation (CASL). Express consent — where the customer explicitly agreed to receive texts from you — is the safest approach. Implied consent exists when you have an existing business relationship, but it has time limits and conditions.

If you're texting existing customers about their own service or appointment, you're generally in the clear. If you're building a marketing list to text people who haven't opted in, you need express consent first. When in doubt, ask — "Can I send you updates and follow-ups by text?" takes five seconds and covers you.