How to leverage SMS marketing gr to increase return visits

How to leverage SMS marketing to increase return visits - a Purple guide [INTRODUCTION - approximately 1 minute] Welcome. If you manage a venue - whether that's a hotel, a retail chain, a stadium, or a conference centre - you already know the hardest part of the job isn't getting people through the door the first time. It's getting them back. Today we're going to talk about SMS marketing: specifically, how to use your guest WiFi infrastructure to build a verified, consented phone number database, and then put that database to work driving measurable return visits. I'm going to take you through the technical architecture, the compliance requirements, the implementation steps, and the business case. By the end of this, you'll have a clear picture of what good looks like and what mistakes to avoid. [TECHNICAL DEEP-DIVE - approximately 5 minutes] Let's start with the fundamentals. SMS marketing, in the context of a physical venue, is fundamentally a data problem before it's a messaging problem. You can't send a text to someone whose number you don't have. And you can't use a number you don't have explicit consent to market to - not under GDPR, not under the ePrivacy Directive, and not under Greece's national implementing legislation, Law 4624/2019, which adds specific requirements on top of the base GDPR framework. So the first question is: where does the phone number come from, and how do you collect it compliantly? The answer, for venue operators, is the captive portal - the branded login page that guests see when they connect to your guest WiFi. When a guest connects to your network on hardware from Cisco Meraki, HPE Aruba, Ruckus, Juniper Mist, or Ubiquiti UniFi, they hit a splash page before they get internet access. That splash page is your data collection point. Purple's Capture plan deploys a captive portal that requests a mobile number as part of the login flow. Critically, it presents a separate, unticked checkbox for SMS marketing consent - what we call a conscious-choice opt-in. The guest actively ticks that box. That tick is timestamped, logged, and stored against their profile. That's your GDPR-compliant consent record. Without it, you cannot legally send marketing texts in the EU. Now, once you have a consented phone number, what happens next? The number flows into Purple's data layer, which sits as a cloud overlay on top of your existing network hardware. You don't need to replace your Cisco Meraki or HPE Aruba infrastructure. Purple sits above it. The guest profile is enriched with visit data - when they first connected, how many times they've returned, how long they typically dwell, which venue locations they've visited if you're running a multi-site operation. That behavioural data is what makes SMS marketing genuinely useful rather than just noise. Instead of blasting a generic promotional text to everyone on your list, you can segment. Guests who visited once, three weeks ago, and haven't returned - that's your lapsed segment. Guests who visit every week - that's your loyalty segment. Guests who connected at your Manchester venue but have never visited your Leeds venue - that's a cross-location opportunity. Purple Engage automates the trigger logic. You define the rules: "If a guest has not returned within 14 days of their last visit, send them an SMS with a re-engagement offer." The platform fires the message automatically. You set it up once; it runs continuously. Let's talk about the message itself. SMS has a 160-character limit for a single segment. Every character counts. The highest-performing venue SMS messages share three characteristics. First, they're personalised - they use the guest's first name and reference something specific about their visit history. Second, they contain a clear, time-limited offer - a discount, an event, early access to something. Third, they include a single call to action with a short URL. No paragraphs. No multiple asks. One thing. Industry data from Sakari's 2025-2026 SMS marketing benchmarks shows that SMS achieves 90 to 98% open rates, compared to 20 to 30% for email. Click-through rates sit between 18 and 35%, versus 2.5 to 3.5% for email. Response rates average around 45%, compared to roughly 6% for email. These aren't marginal differences. They're a different category of engagement. For hospitality specifically - hotels, restaurants, bars - the re-engagement window matters. Research consistently shows that the optimal trigger point for a lapsed guest SMS is between seven and 14 days after the last visit. Too soon, and it feels intrusive. Too late, and the venue has faded from memory. For retail, the window is shorter - three to seven days tends to outperform for promotional messages tied to a specific offer. Now, a word on frequency. The data is clear: 53% of SMS opt-outs are caused by over-messaging. The sweet spot for most venue operators is one to two messages per month per guest. If you're running a specific event or a time-limited promotion, you can justify an additional send, but that should be the exception, not the rule. Every message you send that doesn't deliver value erodes the list. [IMPLEMENTATION RECOMMENDATIONS AND PITFALLS - approximately 2 minutes] Let me walk you through what a good implementation looks like, and where teams typically go wrong. Start with your captive portal configuration. The opt-in language matters. It needs to be specific: "I agree to receive SMS marketing messages from [Venue Name]." Not "I agree to receive communications." Not buried in a terms and conditions link. Specific, standalone, unticked by default. This is non-negotiable under GDPR Article 7 and Recital 32. Second, map your segments before you build your first campaign. The most common mistake is launching SMS with a single undifferentiated list. Segment by recency - when did they last visit. Segment by frequency - how often do they typically come. Segment by location if you're multi-site. These three dimensions alone give you eight meaningful audience groups to work with. Third, integrate your SMS platform with your CRM. Purple Engage connects natively to major CRM platforms. If you're running a hotel on a property management system, or a retail chain on a loyalty platform, the guest profile should be unified. An SMS sent without context - for example, a re-engagement message sent to a guest who booked a table yesterday via your reservation system - looks like a system failure. Unified data prevents that. Fourth, test before you scale. Run an A/B test on your first campaign: two versions of the message, same offer, different copy. Measure click-through rate and attributed return visits over a 30-day window. The winning variant becomes your template. The pitfall I see most often is treating SMS as a broadcast channel rather than a triggered, behavioural channel. Broadcast SMS - sending the same message to everyone at the same time - produces mediocre results and accelerates opt-outs. Triggered SMS - sending the right message to the right person at the right moment based on their behaviour - is what drives the numbers you see in the benchmarks. [RAPID-FIRE Q&A - approximately 1 minute] Let me tackle a few questions I hear regularly from venue operators. "Do we need a dedicated short code or can we use a long number?" For venue operators sending fewer than 10,000 messages per month, a long number or a shared short code is fine. Above that volume, a dedicated short code gives you better deliverability and brand recognition. "What's the right opt-in rate to expect from a captive portal?" Typically between 15 and 35% of guests who complete the WiFi login will tick the SMS marketing consent box. Higher rates come from portals that clearly communicate the value - exclusive offers, event previews, loyalty rewards. "How do we handle opt-outs?" Any message must include a simple opt-out mechanism - typically "Reply STOP to unsubscribe." Your platform must process that opt-out immediately and suppress that number from all future sends. Purple handles this automatically. "What about guests who visit once and never return?" Don't over-invest in single-visit guests. Set a maximum of two re-engagement messages. If they don't respond, suppress them. Chasing non-responders drives up opt-out rates and damages your sender reputation. [SUMMARY AND NEXT STEPS - approximately 1 minute] To bring this together: SMS marketing for venue operators works when it's built on a foundation of consented, verified first-party data collected at the WiFi login point. The captive portal is your data collection engine. Purple Capture and Engage automate the collection, segmentation, and campaign delivery. GDPR compliance is non-negotiable and is built into the consent flow. The numbers speak for themselves: 98% open rates, 45% response rates, ROI between 21 and 41 pounds for every pound spent. But those numbers only materialise when you segment properly, trigger on behaviour rather than broadcasting, and respect frequency limits. Your next step: audit your current captive portal. Does it collect mobile numbers? Does it present a standalone SMS consent checkbox? If not, that's where to start. If it does, pull your segment data and identify your lapsed guest cohort - guests who visited in the last 90 days but not in the last 14. That's your first SMS campaign audience. Thanks for listening. For more on how Purple Engage automates this workflow across 80,000 venues worldwide, visit purple.ai.