The highest-ROI marketing channel most hotel groups ignore

Hotel marketing budgets are under pressure from every direction. Google Ads cost more every quarter, OTA commissions keep climbing, and social media demands constant spend just to stay visible. So when budgets are tight, you'd expect hotel groups to double down on their cheapest, highest-performing channel: talking to guests who've already stayed. But most don't. Most pour 80% of their budget into finding new guests and almost nothing into re-engaging past ones.

Your past guests already know your property. Reaching them again costs a fraction of acquiring a stranger through paid channels. So why do so few hotel teams invest here?

Why re-engagement outperforms paid acquisition

The cost of acquiring a new guest keeps getting more expensive. Google Ads cost-per-click for hotel keywords in major European markets has climbed 15 to 25% year on year. Let’s say a click on "boutique hotel Stockholm" or "hotel near Marienplatz Munich" now runs € 3 to 8, and most of those clicks do not convert. At a typical 2 to 4% conversion rate, you are paying € 75 to 400 for a single direct booking through search.

OTA commissions tell the same story: a three-night stay at € 200 per night can cost you € 90 to 150 in commission before the guest even arrives.

Now compare that to an email sent to a past guest. No cost-per-click, no commission, no bidding war. And the performance gap is just as dramatic: re-engagement emails to past hotel guests consistently hit open rates of 40 to 55%, while a generic hotel newsletter sits around 12%. The reason is simple: a past guest who gets a message referencing their actual stay and preferred property is far more likely to engage than a stranger seeing a banner ad. That's also why personalised guest communication consistently beats generic outreach.

Why most hotel groups underinvest in re-engagement

If the economics are this clear, why do most hotel groups spend so little on re-engagement?

The data isn't connected. Guest records sit in the PMS, disconnected from the email platform. The marketing team cannot easily identify who stayed six months ago, what they booked, or how they found the property. Without connected data, re-engagement defaults to a generic newsletter that performs no better than cold outreach.

Acquisition feels more urgent. When occupancy dips, the instinct is to throw money at Google Ads or boost OTA visibility. These channels deliver immediate, measurable traffic. Re-engagement feels slower and harder to measure, even though the returns are better long-term.

Post-stay is nobody's job. Most hotel marketing effort is focused on getting the booking. Once a guest checks out, they disappear from the marketing calendar. That's a missed opportunity, because the post-stay phase is where almost nobody is competing for your guest's attention.

Four messages that bring past guests back

Re-engagement isn't a single blast to everyone who stayed last year. It's a series of well-timed messages that feel personal rather than promotional.

The thank-you (one to three days after checkout).

A brief, genuine message. No hard sell. You can include a feedback prompt or a subtle nudge to book direct next time, but the main goal is just to leave a good impression and keep the door open.

The relevant nudge (eight to twelve weeks later).

Timed to their likely booking pattern. A business traveller who stays monthly should hear something different from a leisure guest who visits once a year. These tips on structuring your communication can help you get the timing right.

The seasonal prompt (timed to their history).

If a guest stayed last summer, reach them in spring with a reason to return. Reference what they experienced and highlight what's changed. You can weave in relevant upsells here too, like a spa package, a dining experience, or a room upgrade, without it feeling pushy because it's based on what they actually did last time.

The honest win-back (twelve or more months of silence).

For guests who've gone quiet, keep it short and real. "It's been a while. Here's what's new." Send it twice. If they still don't engage, take them off your active list. Your sender reputation matters more than chasing people who've moved on. It also helps to think about why guests stop coming back so your message addresses the real reason, not just offers a discount.

Treat your guest database as a marketing channel

This isn't an argument to stop spending on Google Ads or OTAs. They're essential for reaching new audiences, filling distressed inventory, and building awareness in new markets. But they shouldn't eat up most of your marketing budget while your guest database sits untouched.

The thing is, that paid spend resets to zero every January. Your guest database keeps growing with every stay, every interaction, every new data point. The cost of reaching those guests stays flat while the returns keep building.

The hotel groups that get this right treat their guest database like any other marketing channel. They keep it clean, automate the key messages, and stop paying to re-acquire guests who would've come back on their own.

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