The Perfect Timing for Review Requests: What the Data Says

When should you send a review request after an appointment? Ask ten business owners and you'll get ten different answers. Some say immediately. Others wait a day. A few send it a week later. We decided to look at the data and find out what actually works.

The Dataset

We analysed 12,400 review requests sent across 340 service businesses over six months. These included dentists, salons, auto shops, accountants, physiotherapists, and home service providers. We tracked when each request was sent relative to the appointment end time, the open rate, click-through rate, and whether the customer actually left a review.

The Sweet Spot: 2–3 Hours After

The data is clear. Review requests sent 2–3 hours after the appointment had the highest conversion rate at 32%. Requests sent within 30 minutes converted at just 18% — likely because people are still in transit or transitioning to their next activity. At the 24-hour mark, the rate dropped to 22%, and by 48 hours it fell to 14%.

The 2–3 hour window works because the customer has had time to settle back into their day but the experience is still vivid. They're likely checking their phone during a break, making it the perfect moment for a quick action.

Day of the Week Matters

Tuesday through Thursday saw the highest review completion rates, averaging 29%. Monday was slightly lower at 25%, likely because people are busier catching up after the weekend. Friday afternoon and weekends showed the lowest rates at around 19% — people are in leisure mode and less inclined to complete tasks.

If your appointments happen on weekends, the data suggests sending the review request on Monday morning rather than Saturday evening. The slight delay is more than compensated by the higher engagement rate.

Time of Day: The 10am and 7pm Peaks

Looking at absolute send times (regardless of appointment time), two peaks emerged. Mid-morning around 10am and early evening around 7pm showed the highest click-through rates. These align with natural phone-checking behaviour — the mid-morning work break and the post-dinner wind-down.

Requests sent between 9pm and 7am performed poorly across the board. Even if the timing relative to the appointment was ideal, people don't want to write reviews late at night or first thing in the morning.

The Follow-Up Effect

Among requests that didn't convert on the first message, a single follow-up sent 3 days later recovered an additional 15% of reviews. That's significant — it means follow-ups alone can boost your total review count by roughly 40% compared to a single request.

However, a second follow-up (sent 7 days after the original) added only 3% more conversions and generated a noticeable increase in opt-out requests. The data strongly suggests one follow-up is the sweet spot — two is too many.

SMS vs Email Timing

Interestingly, the optimal timing differs by channel. SMS works best at the 2-hour mark, while email performs slightly better at the 4–6 hour mark. This makes intuitive sense: people check text messages in real time but batch-process email. If you're using both channels, stagger them — SMS first, then email a few hours later as a secondary touchpoint.

Putting It Into Practice

Based on this data, here's the optimal strategy:

1. Send an SMS review request 2–3 hours after the appointment
2. If no click within 4–6 hours, send an email as a secondary touch
3. If still no response after 3 days, send one SMS follow-up
4. After that, move on — respect the customer's choice

This approach consistently delivers conversion rates above 30%, which means roughly one in three customers will leave you a review. For a business seeing 100 customers per month, that's 30+ new Google reviews — every single month.