Data quality & transparency
How we check email data.
Our monthly verification process, its limitations, and the information to review before ordering from Latest Mailing Database.
01 / Our process
Seven steps. Clear expectations.
We verify our email data each month. The stages below describe the checks and preparation steps used for our B2B and consumer email databases.
| Stage | Purpose |
|---|---|
| 01Email syntax | Check email address formatting. |
| 02Domain & DNS | Check domain and DNS information. |
| 03MX checks | Check mail-exchange information. |
| 04Mailbox checks | Assess mailbox responses, including outcomes that may be inconclusive. |
| 05Duplicate removal | Remove duplicate records. |
| 06Suppression screening | Screen records against our suppression information. |
| 07Delivery preparation | Prepare the selected data after these checks. |
Monthly verification is not continuous checking. Contact details and server responses can change between verification, delivery and use.
What verification can tell you.
Checks provide useful signals
They help assess email data at the time of checking. Syntax, DNS and MX results do not prove that a mailbox exists.
Results have limits
They do not guarantee inbox delivery, future validity, recipient interest or the accuracy of every contact field.
Catch-all configurations, temporary errors and server restrictions can produce inconclusive mailbox results. Verification also does not establish consent or permission for a particular marketing use.
02 / Before ordering
Confirm the fit before you decide.
Review the details for the database you intend to order.
- Confirm the B2B or consumer audience, locations and included fields.
- Review a demonstration file structure and available columns.
- Ask about verification information for your selected database.
- Confirm how inconclusive results are handled.
- Review the delivery scope and applicable purchase terms.
03 / Reporting standards
Numbers need context.
A useful verification report identifies the run, explains its scope and defines its results. These are reporting standards, not measured results presented on this page.
| Report item | What to look for |
|---|---|
| Run identification | The verification date, tools and relevant versions. |
| Coverage & selection | The dataset covered, whether it was a full run or a sample, and how a sample was selected. |
| Outcome definitions | The meaning of each result category, including uncertain outcomes. |
| Counts & denominators | Input rows, duplicates, check outcomes, suppressed records and final retained records. Percentages should identify what they measure. |
| Review responsibility | Who prepared and reviewed the report. |
Check outcomes may overlap. Do not add overlapping categories as though they represent separate records. Sample results describe the sample examined; broader conclusions require an appropriate selection method.
Privacy when sharing evidence: Use aggregate results and redacted examples. Keep names, email addresses, customer information, credentials and identifiable record-level logs private.
04 / Resources
Continue your review.
Read our related pages and official sender guidance when planning your campaign. External resources do not endorse or certify Latest Mailing Database.
Need details for a particular database?
Share your audience and required fields so you can confirm the scope before ordering.