Automated review-request emails for venues
This guide explains how to build automated review-request emails using verified guest WiFi data to increase your Google rating. It covers the optimal timing, wording, and architecture required to turn foot traffic into a consistent stream of five-star reviews.
Why this matters for your venue
A one-star improvement in your Google rating drives between 5% and 9% more revenue. The problem most venues face is not that their guests had a bad time, but that the guests who had a great time went home and forgot to leave a review. The guests who had a frustrating experience find the review site in 30 seconds.
That asymmetry costs you money. An automated review request email, timed and worded correctly, is the most direct way to fix it. When you get this right, you capture the positive sentiment of your satisfied guests before it fades, driving up your overall rating and, consequently, your revenue.
The approach
Most generic email tools fail at this because they do not know who actually visited your venue yesterday. They work from a static list of people who might have signed up for a newsletter online but never set foot in the place.
Purple Engage works differently. When a guest connects to your Guest WiFi, they log in through a branded splash page. That login is a conscious choice. They enter their email address, they see your data policy, and they opt in. Under GDPR, that is verified, first-party data. Purple captures the visit timestamp, the venue location, and the contact details in one action.
So when you build a review request automation in Purple Engage, you send it to people who were physically in your venue, confirmed by a WiFi session, within the last 24 hours. That is why review request emails sent through Purple see open rates around 38% (Purple data), compared to an industry average of around 21% for marketing emails generally.

How to do it with your guest WiFi
The architecture is straightforward. You need a system that captures the visit, verifies the dwell time, and triggers the email.
- The Capture: A guest walks into your restaurant, hotel, or retail store and connects to the Guest WiFi.
- The Verification: They authenticate via a captive portal. This is where you secure GDPR-compliant consent.
- The Filter: You set a dwell time threshold. If they are connected for less than 15 minutes, they are likely just walking past. If they stay for 45 minutes, they are a genuine guest.
- The Trigger: Once the session ends, the automation timer starts.
This requires the Guest WiFi product to capture the initial data, feeding directly into Purple Engage to run the automation.
What to send, and when
Timing is everything. Send within the first hour, and you risk catching the guest while they are still travelling home or still at the venue. It feels pushy. Send the next morning, and the memory has faded.
The sweet spot is two to four hours after the visit. The emotional peak of a good meal, a great hotel stay, or a satisfying shopping trip is highest in the hours immediately after it ends.

The wording
Keep it short. Personal. One ask.
The subject line should reference the visit, not the brand. "How was your visit on Tuesday?" outperforms "We'd love your feedback!" because it signals that this email is specifically about their experience. Purple's merge tags pull in the visit date automatically.
The body copy should be three sentences maximum:
Thanks for coming in on Tuesday. We hope you enjoyed it. If you have two minutes, a Google review would mean a lot to us - here is the link.
Do not include a discount offer. Do not include a survey. Do not include three paragraphs about your brand values. The call to action should go directly to your Google Business Profile review page. The fewer clicks between the email and the review box, the higher the conversion rate.
Measuring what works
Do not just measure open rates. Tie the campaign back to return visits and revenue.
Monitor your actual Google review count weekly. If your open rate is below 25%, test a different subject line. If your click rate is below 10%, simplify the email body. Most importantly, track the lifetime value of guests who leave a review versus those who do not. A guest who publicly endorses your venue is significantly more likely to return.
Where to start
Here is your deployment checklist:
- Ensure your WiFi login captures email addresses with explicit opt-in consent.
- Set a dwell time filter of at least 15 to 20 minutes to remove accidental connections.
- Build the automation in Purple Engage: Trigger on WiFi session end, delay for two hours.
- Set an audience filter: first visit, or last review request more than 90 days ago.
- Write a subject line that references the visit date and link directly to your Google review page.
If you are currently deciding how to capture this data, read our guide on QR codes vs WiFi login for collecting customer emails to understand why the network layer provides better verification.
