You finished the job, the customer was thrilled, and you politely asked them to leave a review. Then nothing happened. The problem usually isn't your service or even your ask—it's the channel you used and the timing behind it. Choosing between email and SMS for review requests is one of the highest-leverage decisions you can make, because the same message can pull a 5% response rate or a 30% one depending on how it lands.
This guide breaks down how email and SMS actually perform for review requests, when to use each, and how to combine them into a system that quietly stacks up five-star reviews without you lifting a finger after setup.
Why The Channel Matters More Than The Message
Most owners obsess over wording. The truth is that the delivery channel determines whether your message gets seen at all—and an unseen request can't convert no matter how perfect the copy.
Think about your own behavior. A text from a number you recognize gets read within minutes, often seconds. An email might sit unopened for a day, get buried under promotions, or never clear the spam filter. That gap in attention is the entire ballgame when you're asking someone to take a 60-second action.
There are three variables that decide whether a review request works:
- Open rate — did they even see it?
- Click-through rate — did they tap the link to your review page?
- Completion rate — did they actually post the review?
Email and SMS perform very differently across these three, and understanding why helps you pick the right tool for each situation rather than defaulting to whatever's easiest.
How SMS Performs For Review Requests
Text messages are the heavyweight champion of open rates. The overwhelming majority of texts get read, and most are opened within the first few minutes of arriving. For a time-sensitive ask—"how was your visit today?"—that immediacy is gold.
The strengths of text
Speed and visibility. A text lands on the lock screen. There's no folder, no promotions tab, no spam filter standing between you and the customer. When you send a review request by SMS shortly after a completed job, you're catching the customer while the experience is still fresh and their phone is already in hand.
Frictionless tapping. People do everything on their phones now, including writing Google reviews. An SMS with a direct review link means the customer taps once and lands exactly where they need to be—no copying a URL from an email into a mobile browser.
Higher completion on mobile. Because the entire flow happens on one device, fewer people drop off. The customer reads the text, taps the link, and writes the review without ever switching contexts.
The drawbacks of text
Cost and compliance. SMS isn't free, and more importantly, it's regulated. You need genuine consent to text customers, and rules like the TCPA in the U.S. carry real penalties for getting it wrong. You can't just buy a list and start blasting.
Brevity is forced. A text needs to be short. There's no room to explain context, add your logo, or warm up a customer who's lukewarm. It's a blunt instrument—powerful, but not subtle.
It can feel intrusive. A text is more personal than an email. Sent at the wrong time or too frequently, it reads as pushy. One well-timed text converts; three in a week annoys.
Hi {{first_name}}, it's {{business_name}}. Thanks for choosing us today! If we earned it, would you mind leaving a quick Google review? It takes 30 seconds and means the world to a small business like ours: {{review_link}}
How Email Performs For Review Requests
Email is the slower, quieter workhorse. Open rates are far lower than SMS—often a fraction of what text achieves—but email has strengths that make it indispensable in the right context.
The strengths of email
Room to build the case. Email gives you space. You can include a photo of the completed work, restate the value you delivered, add your logo, and make the ask feel warm and personal. For higher-ticket or relationship-driven services, that context lifts response rates.
Essentially free at scale. Once you have someone's email, sending costs almost nothing. For a database of hundreds or thousands of past customers, that economics matters—especially when you're also running reactivation campaigns to the same list.
Lower compliance friction. Email consent norms are looser than SMS, and an unsubscribe link covers most of your obligations. It's simply easier to start emailing customers than texting them.
Better for batch and follow-up. Email is ideal for the "we haven't heard from you" nudge or a multi-touch sequence. It doesn't feel as invasive to receive a second email as a second text.
The drawbacks of email
The visibility problem. This is email's Achilles' heel. Promotions tabs, spam filters, and overflowing inboxes mean a large share of your requests are never seen. You can write the best email in the world and still lose to an algorithm.
More clicks, more drop-off. A customer reading email on a desktop has to navigate to your review page, then often re-authenticate on their phone to post a Google review. Every extra step bleeds completions.
Slower feedback loop. Where SMS catches the customer in the moment, email might reach them days later when the warm glow of great service has faded.
The Verdict: Use Both, In The Right Order
The honest answer to "email or SMS?" is both—sequenced intelligently. They're not competitors; they're a relay team. The highest-performing review request systems use SMS for immediacy and email for reach and follow-up.
Here's the framework that works for most local service businesses:
- First touch: SMS, sent within an hour or two of job completion. This is your highest-converting moment. Strike while the experience is fresh and the phone is in hand.
- Second touch: email, sent 2–3 days later to anyone who didn't respond. This catches people who missed the text or meant to act and forgot.
- Optional third touch: a gentle email reminder about a week out, only if they still haven't reviewed and you have an engaged relationship.
This sequence respects the customer—no spam—while maximizing the chance your request gets seen and acted on. The key is automation. Doing this by hand for every customer is impossible, which is exactly why platforms like Revive Local handle the timing and channel switching automatically once a job is marked complete.
When To Lean Email, When To Lean SMS
The right default depends on your business model. Match the channel to how you already relate to customers.
Lean SMS if:
- Your service is transactional and fast (auto detailing, a single HVAC repair, a haircut).
- You interact with the customer in person and can confirm their number on the spot.
- Your customer base skews younger and lives on their phones.
- You want the single highest-converting review channel and can manage consent properly.
Lean email if:
- You serve ongoing or higher-ticket relationships (a law firm, a med spa with a treatment plan, a B2B service).
- You have a large database of past customers you want to re-engage at low cost.
- You're combining review requests with newsletters or win-back offers.
- Your customers are professionals who live in their inbox during work hours.
Most businesses end up using both, but knowing your primary channel helps you invest your setup energy where it counts.
Timing And Frequency: The Hidden Multiplier
Channel matters, but timing can double or halve your results within the same channel. A few rules that hold across both email and SMS:
Send while the memory is hot. The window right after a positive experience is when goodwill peaks. Every day you wait, response rates decay. For most services, same-day or next-day is ideal.
Avoid bad hours. Don't text at 8 a.m. or 10 p.m. Aim for mid-morning or early evening when people can act without being interrupted or annoyed. Email is more forgiving but still benefits from landing during waking hours.
Don't over-ask. One request plus one or two follow-ups is plenty. Hammering a customer destroys goodwill and can violate platform and messaging rules. For more on cadence, see our guide on review request frequency.
Personalize the ask. "Thanks for choosing us, Sarah" beats "Dear valued customer" every time, in either channel. Even small personalization signals that a human cares about their experience.