A real estate email address list is a file of contacts in or around the property market, grouped into four segments: licensed agents and brokers, property investors and landlords, developers and service firms, and homeowners or tenants. The first three are largely business domains; the fourth is consumer mailboxes. In the BounceZero corpus, non-freemail (business and ISP) domains verified 14.5% invalid and consumer providers ranged from 3.5% at gmail.com to 92.7% at hotmail.com.au, so the segment mix of a property list decides its bounce rate.
| Segment | Who | Typical address type | Where lists come from | Expected invalid before verification |
|---|---|---|---|---|
| Agents and brokers | Licensed agents, brokerage staff, property managers | Brokerage domain, or gmail.com for independents | Licensing boards, portal profiles, brokerage sites, compilers | 12 to 25%; agent churn is high |
| Investors and landlords | Buy-to-let owners, funds, HMO operators | Mixed: business and consumer | Land registry, company registries, landlord associations | 15 to 30% |
| Developers and services | Developers, mortgage brokers, surveyors, conveyancers | Business domain | Company registries, trade bodies, finders | 10 to 20% |
| Homeowners and tenants | Private individuals | Consumer: gmail, outlook, ISP | Compilers joining property records to contact data | 20 to 45%; ISP-heavy files worst |
Agent-to-agent and vendor-to-agent outreach follows B2B rules. Homeowner outreach by email needs consent in the UK and EU; see the legal section below.
Licensed agents move between brokerages, go independent, and leave the industry at rates that would alarm most B2B sellers. A brokerage-domain address lasts as long as the affiliation; an independent agent on gmail.com lasts longer but is harder to attribute to a firm. Lists compiled from licensing boards carry the agent's registered address, which is often personal and often stale.
The practical consequence: an agent list more than six months old has lost a meaningful share of its brokerage-domain rows, and the gmail.com rows that remain are the stable core. Verification sorts them in minutes; without it, the first send tells you with bounces.
BounceZero corpus, April to October 2026. These providers dominate residential files in their markets.
| Provider | Market | Verified | Invalid | Catch-all | Unknown | Valid |
|---|---|---|---|---|---|---|
| gmail.com | Global | 801,225 | 3.5% | 0.0% | 0.0% | 96.0% |
| hotmail.com | Global | 253,445 | 16.5% | 0.1% | 0.0% | 70.5% |
| yahoo.com | Global | 21,081 | 8.3% | 27.7% | 39.0% | 16.4% |
| aol.com | US | 33,275 | 17.9% | 24.7% | 19.9% | 11.0% |
| att.net | US | 421,292 | 10.1% | 0.0% | 26.4% | 5.8% |
| iinet.net.au | Australia | 64,161 | 2.8% | 12.4% | 65.5% | 18.9% |
| tpg.com.au | Australia | 246,811 | 30.1% | 8.9% | 5.1% | 53.9% |
| hotmail.com.au | Australia | 110,452 | 92.7% | 0.0% | 3.1% | 2.3% |
Yahoo and AOL defer verification probes, so high unknown and catch-all shares there are the provider's behaviour, not dead mailboxes. Full tables: Lead List Quality Benchmarks 2026.
| Country ending | Verified | Invalid | Catch-all | Unknown | Confirmed valid |
|---|---|---|---|---|---|
| .com | 2,158,955 | 16.4% | 4.4% | 14.7% | 59.7% |
| .uk | 21,194 | 17.0% | 3.7% | 10.6% | 65.0% |
| .ca | 7,561 | 15.9% | 6.2% | 13.9% | 54.4% |
| .au | 560,378 | 36.5% | 6.3% | 17.6% | 37.3% |
| .us | 10,998 | 34.1% | 13.6% | 21.9% | 29.1% |
| .nz | 36,773 | 28.9% | 0.1% | 3.6% | 11.6% |
Australian and New Zealand property lists are the hardest in the corpus on both the consumer and the business side.
State and national licensing registers are public and accurate for licence status. Portal profiles give the current brokerage. Join the two, run names through a finder for brokerage addresses, and verify. The finder guide compares tools.
Company registries list the directors of property companies; landlord licensing schemes in the UK list licensed landlords by council. Both are fresher than any compiled file.
Mortgage, surveying and conveyancing bodies publish member directories. Developers are companies; registries and their own sites give the pattern.
There is no clean way to build a consumer file. Buy from a compiler who documents consent, sample 200 rows, verify, and route unconfirmed rows to post or phone.
Agents, investors, services and homeowners need different messages and different legal bases. One file, four segments.
Valid, invalid, catch-all and unknown per row. Expect the homeowner segment to carry the most unknowns if it is US or Australian ISP heavy.
Identify yourself, offer an opt-out, document legitimate interest. Ramp volume per domain while bounces stay under 2%.
Property has the luxury of post and phone. Unconfirmed consumer addresses are not worth the domain risk.
Agent churn is the fastest in the file. A re-check before every send keeps the brokerage-domain rows honest.
Agents, brokerages, developers and service firms are corporate subscribers. In the UK, PECR allows marketing email to them with identification and an opt-out, and UK GDPR requires a documented legitimate interest and a privacy notice naming the source. The US allows it under CAN-SPAM. Independent agents on personal addresses are a grey area; treat them as individuals if in doubt.
Homeowners and tenants are individuals. Cold marketing email to individuals in the UK and EU needs consent under PECR and the ePrivacy rules; a bought homeowner file is usable for post and compliant calls unless the compiler can evidence consent for email. In the US, CAN-SPAM permits it with an opt-out. The GDPR compliance guide has the detail.
Portals, networks, brokers and compilers compared
Tools by workflow with accuracy notes
Sequences and deliverability for property outreach
Agency-to-agency and vendor outreach
Every provider and country cut from the corpus
Sources ranked by data quality
Licensing boards publish registers of licensed agents, portals show current brokerage affiliation, and compilers sell joined files. The freshest route is register plus portal plus a finder for the brokerage address, verified before sending. Compiled agent files older than six months carry heavy churn.
It depends on segment and age. Business-domain segments verify around 14.5% invalid in the corpus; consumer segments range from 3.5% invalid at gmail.com to over 90% at abandoned Australian ISP mailboxes. Verify a 200-row sample from the segment you will actually mail before buying.
In the US, yes under CAN-SPAM with identification and an opt-out. In the UK and EU, individuals need consent for marketing email, so a purchased homeowner file is usable for post and compliant phone contact unless the compiler can evidence email consent. Agents, developers and service firms follow B2B rules.
A file of licensed real estate agents, usually in the US, with name, brokerage, licence number, email and phone, compiled from state licensing registers and portal profiles. Quality varies with age; agents change brokerage often, so verify before sending and re-verify before every later send.
Agent and brokerage segments before every send and at least monthly, because churn is high. Investor, developer and service segments every 90 to 180 days. Homeowner segments before every campaign, since consumer ISP mailboxes are abandoned without notice and the file cannot be rebuilt from public sources.
Agents, investors, services and homeowners in one upload, valid, invalid, catch-all and unknown per row. 100 free checks a month, bulk jobs to a million rows.
Ayoub built BounceZero's 5-stage validation pipeline, its dedicated BGP-announced IP infrastructure, and the Patroni HA PostgreSQL cluster behind every verification. Previously built high-volume email delivery infrastructure. Trained at 1337 Benguerir (École 42 network, 2019). Open-source: bgp_analyzer.
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