Real Estate

Email Verification for Real Estate

{# intro is rich HTML (h3/ul/p). A

cannot contain block elements: the browser auto-closes it and the layout collapses. Render it in its own block, left aligned, with the shared rich-text styling. #}

Real estate runs on a long, slow pipeline. Someone enquires about a property today and buys in eighteen months, or lists their house in three years. The entire business model depends on being able to reach that person over a very long period, which is precisely the period during which email addresses go stale.

Leads arrive from portals, from open houses, from valuation forms, from Facebook ads. The quality varies enormously. Portal enquiries in particular are a mix of serious buyers, casual browsers, and people who typed something into the form to get a floor plan without giving you a way to contact them. If you cannot tell those apart, your agents waste hours chasing addresses that never existed.

Open house sheets are a data quality disaster

A paper sign-in sheet at a viewing is handwriting, transcribed later by someone who was not there. It produces exactly the kind of address that fails: a wrong letter in the domain, a missing dot, a name spelled the way it sounded. That lead came to a viewing. They were interested enough to show up. And they are now unreachable because of a transcription error nobody caught.

Listing alerts only work if they land

The core retention product in residential agency is the new listing alert. It is what keeps you present in a buyer's mind for the year and a half before they transact. If it bounces, you are simply gone. Worse, if a large share of your alert list is dead, the bounce volume damages your sending reputation, and the alerts stop landing for the live buyers too.

What gets checked

Mailthentic runs syntax validation, domain and MX record checks, 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 comes back with the status, the reason, the SMTP response code and a confidence score.

Where an address cannot honestly be confirmed, we say so rather than guessing. A catch-all domain accepts mail to 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 block address harvesting. Since most consumer property leads sit on exactly those providers, any tool promising to confirm them all is selling you certainty it does not have.

Real-time API on valuation forms, portal lead capture and alert signups, so typos are fixed by the person who made them.
Bulk CSV upload for the years of leads sitting in your CRM, 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 your volume is steady.

Start Free Try Free Checker

The Real Estate deliverability challenge

Open house sign-in sheets produce broken addresses

Handwriting transcribed by someone who was not at the viewing is a reliable source of typos. The lead showed up in person, they were interested, and now they are unreachable because of one wrong character.

Portal enquiries include addresses that were never real

Some people fill in a form to get the floor plan and have no intention of being contacted. Your agents spend hours chasing addresses that bounce, and the CRM records them as leads that went cold.

The pipeline is long and addresses decay across it

A buyer registered today may transact in eighteen months. Over that period people change jobs, change providers and abandon inboxes, so a large part of your nurture list is quietly going dark.

Listing alerts stop landing for everyone

New listing alerts are your retention product. Send them to a list full of dead addresses and the bounce volume damages your sending reputation, which means they stop reaching the live buyers too.

How Mailthentic helps Real Estate teams

Verify the lead as it is captured

Call the real-time API from valuation forms, portal integrations and alert signups. Syntax, domain, MX and disposable checks run instantly, so a broken address is corrected on the page instead of becoming a dead lead.

Clean the years of leads in your CRM

Upload the full contact 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 agents chasing addresses that do not exist

An invalid verdict on a portal enquiry tells the agent immediately that there is no email route to this person. That is a prompt to call instead, rather than three follow-up emails into a void.

Keep listing alerts in the inbox

Removing dead addresses before the alert list is mailed is the most direct way to keep your bounce rate low and your alerts landing where the buyers who are still active will actually see them.

Open house and valuation form typos caught at the point of entry
Portal enquiries with fake or invalid addresses flagged before an agent chases them
A nurture list that stays reachable across a long buying cycle
New listing alerts that keep landing in the inbox
Honest labelling of addresses that cannot be confirmed, instead of a false valid
Verdicts written back to Brevo, HubSpot, Salesforce, Mailchimp or PlusVibe

Frequently asked questions

Can I verify a lead the moment it comes in from a portal?

Yes. The real-time API can be called from whatever receives the lead, whether that is your CRM webhook, your own form, or an integration layer. You get the status, the reason, the SMTP response code and a confidence score immediately, so an agent knows before they pick up the file whether there is an email route to this person.

Most of my leads are on Gmail. Can you confirm those?

Not with certainty, and neither can anyone else. Gmail, Google Workspace, Outlook and Microsoft 365 deliberately return a 250 OK even for mailboxes that do not exist, to stop address harvesting. We can confirm the syntax, the domain and the MX records, and we can tell you it is not disposable, but we will not claim to have confirmed the mailbox itself. We report the ambiguity honestly with a confidence score.

What should we do with the open house list we typed up from paper?

Run it through a bulk verification before you mail it. That kind of list is dominated by transcription errors, and verification will separate the addresses that work from the ones that were mistyped. For the failures, you at least know to go back to the paper sheet and re-read the handwriting rather than assuming the lead went cold.

How often should I clean my CRM?

The property pipeline is long, so decay is the main enemy. Verifying new leads in real time at capture keeps the front door clean. Beyond that, running a bulk clean of the nurture and alert lists before a significant campaign, or on a regular cycle, keeps the bounce rate low enough that your alerts continue to land.

Do you sell or share the contact data I upload?

No. Mailthentic is GDPR aligned and contact data is never sold, shared or reused. The addresses you submit are processed to return a verification result and for nothing else.

Do credits expire?

Pay-as-you-go credits never expire. If you buy a batch to clean a CRM backlog and then only need a trickle for new leads, what you paid for is still there. A monthly plan is available if your capture volume is steady enough to make that the better fit.

More Industries

SaaS Ecommerce Marketing Agencies Fintech Healthcare Recruiting

Reach the inbox in Real Estate

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

Get 1,000 Free Credits View Pricing