A guest who never got the confirmation is a guest at your desk.
Booking confirmations, check-in instructions and schedule changes are messages guests are actively waiting for. When the address was taken down wrong at the desk or mistyped on a phone, the message does not arrive and the problem lands on your staff.
What we found in 807,203 verifications · H1 2026
75.9%
Deliverable
10.2%
Invalid
8.7%
Risky
8.1%
Catch-all
80% of the lists we processed were at least 20% unusable. See the full benchmark data
Guest email is collected in a hurry: at a counter, on a phone, through an agent, through a partner. Every one of those routes introduces errors that only show up when a message fails to arrive.
The confirmation is the message that reassures the guest they are booked. Verification at the form makes sure it can reach them.
A schedule change, a room move or a cancellation is time-sensitive. An address that bounces means a guest who finds out at the airport.
Addresses collected verbally are the most error-prone of all. A real-time check catches the mistake while the guest is still standing there.
Bookings arriving through third parties bring addresses of unknown quality straight into your database.
Marketing to a decayed list can damage the same reputation your booking confirmations depend on.
Pay-as-you-go from $4 per 1,000 emails, and credits never expire, which suits a business with a booking calendar rather than a flat year.
Add verification to the booking form, the loyalty signup and the front-desk system. An address that cannot receive mail gets corrected on the spot, while the guest is still in front of you.
Catches the common domain typos that phone keyboards produce
Flags disposable addresses used to grab a one-time discount
Same endpoint works for web forms, kiosk apps and property systems
// booking-form.js — verify as the guest leaves the email field
emailField.addEventListener('blur', async () => {
const r = await fetch(
'https://clearbounce.net/api/v1/verify?email=' + emailField.value,
{ headers: { 'X-API-Key': CB_KEY } }
).then(r => r.json());
if (r.result === 'undeliverable') {
showHint(r.did_you_mean
? 'Did you mean ' + r.did_you_mean + '?'
: 'We cannot send your confirmation to this address.');
}
});
Guest records accumulate over years, across property systems, booking engines and spreadsheets from a previous provider. Verifying the combined list tells you how much of it can still be reached before you build a campaign on top of it.
Upload an export from your PMS, booking engine or ESP
Identify the addresses that have gone dead since the last stay
Segment risky addresses instead of removing repeat guests by accident
Each of these puts operational mail, not just marketing, at risk.
A cancellation or schedule change is the least forgiving message to bounce. You want to know in advance which guests you cannot reach by email.
If confirmations sent to desk-captured addresses bounce more than the rest, the capture process is the problem and form-level verification fixes it.
Pre-season campaigns hit the full database at once, which is exactly when accumulated dead addresses do the most reputational damage.
Merging guest records from several properties or platforms produces duplicates and stale addresses. Verify the merged list before mailing it.
Discount-driven signups attract throwaway addresses. Verification separates the guests who will come back from the ones who wanted a code.
Post-stay review requests go out to every guest at once. A high bounce rate there is a direct signal that the guest database has decayed.
Connect your platform and verify the list where it already lives, or use the API and skip the export entirely.
Verification demand is rarely flat. It spikes when you migrate, when a season starts, when a list arrives. Pricing that assumes a steady monthly volume charges you for the quiet months too.
Credits never expire. Buy for the spike, use the balance whenever it comes up next.
From $4 per 1,000 emails pay-as-you-go, or save 20% on a subscription if your volume is predictable.
100 free credits on signup, no credit card required.
Start free
100 credits
Enough to verify a real sample of your list and see the result breakdown before you spend anything.
Create a free account Compare all plansYes. The verification endpoint is a single REST call, so it can be wired into a property management system, a kiosk app or a web form and return a result while the guest is still present.
Anything you can export, you can verify. Bulk verification handles addresses arriving from booking partners the same way it handles your own, which matters because you have no control over how they were captured.
Before each season and otherwise every six months. Guest records tend to sit unused between stays, which is exactly when addresses go stale without anyone noticing.
Undeliverable addresses cannot be reached at all, so removing them changes nothing except your bounce rate. Risky and catch-all results are labelled separately, so you can keep repeat guests in a lower-frequency segment rather than deleting them.
No. Credits never expire, so a balance bought for the peak booking period is still there when the next one starts.
100 free credits, no credit card. Verify a sample of your travel and hospitality list and see the deliverable, risky and catch-all breakdown for yourself.