Look beyond the headline number
Check the denominator behind percentages: submitted rows, unique addresses, or completed checks. Those are different quantities. A clear report should tell you which one it uses.
Read the reason
Two rows in the same category may need different handling. A reason code helps explain whether you are seeing a format problem, a provider condition, or another signal.
Separate flags from verdicts
Role-based, disposable, and catch-all indicators add context. Review how the service combines those flags with its final classification.
Check the time and completeness
Confirm when checks happened and whether the job finished. Queued work and partial results should not look like a final report.
Export deliberately
Choose the result groups and fields needed for your next step. Preserve source identifiers and apply your organization’s consent and suppression rules. Next: See MailCheckup’s results guide.
Reconcile the totals
Compare the submitted list with the accepted input and returned records. Understand exclusions and deduplication before comparing percentages. A larger usable percentage can simply reflect a different denominator.
Hand off the interpretation
Include the check time and a short explanation of held records. Separate the technical outcome from your chosen campaign segment. The next person should be able to trace the decision without rerunning the entire list.
Review one representative record with your team. Agree on the evidence, the decision, and who owns the next step before applying the same rule to a complete list.