You just finished a job. The customer is happy. You want a Google review. So you send them a request, but should it be a text message or an email?
Most reputation management platforms default to email. It's cheaper to send, easier to template, and feels more professional. But if the goal is actually getting the review posted, the data points clearly in one direction. Text messages outperform email for review requests by a wide margin, and it's not close.
This post breaks down why SMS wins for review collection, where email still has a role, and how to send text-based review requests without crossing the line into spam.
The numbers: SMS open rates vs email open rates
Email marketing averages an open rate of around 20%. That means for every five review request emails you send, four are never seen. Of the ones that are opened, only a fraction will click through and actually leave a review. Typical email-to-review conversion rates for service businesses sit between 1 and 3%.
Text messages, on the other hand, have open rates above 90%, with most being read within three minutes of delivery. SMS review request conversion rates typically land between 10 and 20%, roughly 5 to 10 times the rate of email.
The reason is simple: people check texts. They don't check promotional emails. Your review request email is competing with newsletters, receipts, and marketing blasts in a cluttered inbox. Your text message lands on a screen the customer is already looking at multiple times per hour.
Why SMS works especially well for service businesses
For plumbers, HVAC technicians, dentists, salons, and other local service businesses, SMS has an additional advantage: it matches how these businesses already communicate with customers.
When a customer books a plumbing appointment, they usually get a text confirmation. When the tech is on the way, they get a text. So when a text arrives after the job asking for a review, it feels like a natural continuation of the conversation, not a marketing message.
Email, by contrast, feels transactional and distant. It arrives in a different context, alongside work emails and promotions, and it doesn't carry the same immediacy. The customer might intend to leave a review but never gets around to opening that email tab again.
Timing: SMS lets you strike while the iron is hot
The best time to ask for a review is immediately after the service is complete, while the positive experience is fresh. A text message sent within an hour of job completion reaches the customer while they're still thinking about the great work you did.
Email requests often sit in an inbox for hours or days before being noticed. By then, the customer's emotional connection to the experience has faded. They're no longer thinking about how relieved they were that the AC got fixed. They've moved on to the next thing.
This timing gap is one of the biggest reasons SMS consistently converts better. It's not just that more people see the message, it's that they see it at the moment they're most willing to act.
Where email still makes sense
Email isn't useless for review collection, but its role is different. Email works better for follow-up communications, like a thank-you message a week after service that includes a review link as a secondary ask. It's also better for sending detailed receipts, service summaries, or maintenance reminders where a review link can be included naturally.
If you already have an email drip set up for post-service communication, adding a review link to it costs nothing. But don't rely on it as your primary review collection method. Use email as a supplement to SMS, not a replacement.
How to send SMS review requests without being spammy
Send one request, one follow-up, then stop. The customer got the text. They either left a review or they didn't. Sending three or four reminders will annoy them and could generate a negative review instead.
Include opt-out language. US regulations require that recipients can opt out of receiving text messages. A simple "Reply STOP to opt out" at the end of the message is standard.
Make it personal. Use the customer's first name and reference your business name. "Hi Sarah, thanks for choosing Riverside HVAC. If you have a moment, we'd love a Google review: [link]" performs far better than a generic template.
Only text customers who've done business with you. Review request texts should go to people who just received your service. This is transactional follow-up, not cold outreach.
Use a direct Google review link. Don't send customers to your website and ask them to find the review form. Send them straight to the Google review prompt where they can tap the stars and write. Every extra step costs you conversions.
The ROI case for SMS review requests
A plumbing business averaging $500 per job needs roughly 2 new customers per month to cover the cost of a review request tool. If SMS review requests help you rank higher in Google's local pack, and they will because review velocity is a ranking factor, the math works out quickly.
Consider this: a business that moves from 15 reviews to 60 reviews over three months will almost certainly see higher placement in Google Maps results for local searches. Higher placement means more calls. More calls mean more jobs. The cost of sending those text messages is trivial compared to the revenue from even one additional job per month.
Pick the channel that gets the job done
If you're running a local service business and you want more Google reviews, SMS is the more effective channel. It reaches customers faster, gets opened more reliably, and converts at a significantly higher rate than email.
You don't need to abandon email entirely, but your primary review request should go out via text, ideally within an hour of completing the job. That single change will likely do more for your review count than any other marketing tactic you could implement.
Nudge is an SMS review request tool built for exactly this workflow. You add a customer after the job, Nudge sends the text with your Google review link, and a follow-up goes out automatically if they haven't clicked. Try it free for 14 days.