Email Verification for Hospitality | Mailthentic
Mailthentic
Hospitality

Email Verification for Hospitality

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Hospitality collects email addresses in the worst possible conditions. At a busy front desk, over the phone, on a booking form filled in on a phone in a taxi, on a paper registration card in handwriting that nobody can read. Then that address becomes the channel for the confirmation, the pre-arrival information, the room upgrade offer, the digital key, the folio and every marketing message for the next five years.

Nobody ever goes back and checks it. If it was wrong when it was typed, it is wrong forever, and the guest simply never hears from you again.

Third-party bookings make it worse

A large share of reservations arrive through OTAs and intermediaries, and the address that comes with them is often an aliased or relay address that is not the guest's real inbox and may stop working after the stay. Building a marketing database out of those addresses produces a list that looks large and behaves like a wall. Verification will not turn an alias into a real address, but it will show you which parts of your database are actually reachable, so you stop counting the rest as guests you can market to.

Confirmations are not marketing

The reservation confirmation, the pre-arrival email with parking and check-in details, and the receipt after checkout are operational messages that the guest expects. If they bounce, the guest arrives unprepared and the front desk absorbs the friction. Worse, a decayed marketing list generates bounces that damage the sending reputation those operational messages depend on, because they share a domain.

What Mailthentic checks

Syntax, domain and MX records, disposable domain detection across over 800 known throwaway services, catch-all detection, role-based flagging across more than 150 prefixes, and risky or invalid detection. Every result returns the status, the reason, the SMTP response code and a confidence score.

Where the answer cannot honestly be known, we say so. A catch-all domain accepts every address by design, so no verifier can confirm an individual mailbox on it. Gmail, Google Workspace, Outlook and Microsoft 365 return a 250 OK even for mailboxes that do not exist, because they deliberately prevent harvesting. Most guest addresses are consumer addresses on exactly those providers, so a vendor promising to confirm every one of them is not being straight with you.

  • Real-time API on booking forms and loyalty signups, so a typo is caught while the guest can still fix it.
  • Bulk CSV upload for the guest database, with duplicates removed before processing so you are not charged for them.
  • CRM integrations with Brevo, HubSpot, Salesforce, Mailchimp and PlusVibe.
  • Credits that never expire, or a monthly plan if you mail regularly.

The Hospitality deliverability challenge

Addresses are captured at a busy desk and never checked

Typed at speed from a phone call, a handwritten card or a rushed conversation at check-in, the address goes straight into the PMS. If it was wrong then, it is wrong forever, and the guest never hears from you again.

Pre-arrival information does not reach the guest

Parking, check-in times, access codes, restaurant bookings. When the pre-arrival email bounces the guest turns up without any of it, and the front desk absorbs the friction that a working address would have prevented.

OTA and relay addresses are not real inboxes

A large share of bookings arrive with an aliased or relay address that may stop working after the stay. Marketing to those addresses builds a database that looks large and delivers nothing.

Marketing bounces damage operational email

Confirmations, folios and offers share a sending reputation. A decayed guest list mailed with a seasonal offer pushes your reservation confirmations toward the spam folder, and guests stop receiving the mail they expect.

How Mailthentic helps Hospitality teams

Verify at the booking form and the loyalty signup

The real-time API runs syntax, domain, MX and disposable checks as the address is entered, so a mistyped address is corrected by the guest instead of quietly becoming a permanent dead record in the PMS.

Find out how much of the guest database is real

Upload the guest export as a CSV. Duplicates are removed before processing, so you are not charged for them, and every row comes back with a status, a reason, an SMTP response code and a confidence score.

Stop counting unreachable records as marketable guests

Aliased, relay and dead addresses are identified, so your database size reflects the guests you can actually reach rather than the number of rows you happen to have stored.

Protect the mail guests are expecting

Cleaning the marketing list keeps your bounce rate low, which is exactly what mailbox providers use to decide whether the reservation confirmation lands in the inbox.

  • Reservation confirmations and pre-arrival details that actually arrive
  • Fewer guests turning up without the information you sent them
  • A guest database measured by reachable contacts, not stored rows
  • Typos caught at booking and loyalty signup instead of never
  • Marketing sends that do not damage the deliverability of operational mail
  • Verdicts pushed back into Brevo, HubSpot, Salesforce, Mailchimp or PlusVibe

Frequently asked questions

Can verification fix the aliased addresses we get from OTAs?
No tool can turn a relay alias into a real inbox, and you should be suspicious of any that claims to. What verification does is show you which of those addresses are still accepting mail and which are not, so you stop treating a dead relay address as a marketable guest. The real fix is capturing a direct address during the stay, and verification tells you which guests you still need to do that for.
How do we stop typos from the front desk entering the system?
Call the real-time API wherever the address is entered, including the booking form, the loyalty signup and, if your PMS allows it, the check-in screen. Syntax, domain and MX checks run immediately, so a wrong domain is caught while the guest is still standing there and can be asked to confirm it.
Why do most guest addresses come back as unconfirmed rather than valid?
Because most guests use Gmail, Outlook or another major consumer provider, and those providers return a 250 OK even for mailboxes that do not exist, to stop address harvesting. That means no verifier can confirm the individual mailbox. We can confirm syntax, domain, MX records and disposable status, and we report the rest honestly with a confidence score rather than guessing.
How often should we clean the guest database?
Guests return infrequently, so addresses sit untouched for long periods and decay quietly. Verifying in real time at capture keeps new records clean. Beyond that, a bulk clean before any significant campaign, especially a seasonal one where the volume is high, is where the value shows up.
Do you charge for duplicates in our export?
No. Duplicates are removed before processing, so you are not charged for them. Hospitality exports are full of them because the same guest appears once per stay, sometimes with different capitalisation. You pay once per unique address.
Is our guest data safe?
Mailthentic is GDPR aligned. Contact data is never sold, shared or reused. Addresses you upload are processed to return a verification result and for nothing else. You only need to send the email addresses themselves, not names, stay history or any other guest detail.

Reach the inbox in Hospitality

Start with 1,000 free verification credits. No credit card required.