Why September Is the Right Moment to Check Your Data
The new term, new plan, back-to-work mindset is not just a consumer thing. Most B2B buyers and marketing teams treat September the same way: a natural reset point before a run of quarter-end targets, autumn events, and the push toward January renewals.
That makes it the right moment to check your data too, for a few practical reasons:
- Send volumes typically increase from September through to year end, so any hidden decay gets amplified fast
- Teams are setting Q4 and next-year plans now, and a clear view of usable data should feed directly into that planning
- A list that has sat quietly over summer has had months to decay without anyone noticing
- Fixing data issues before a busy period is far cheaper than repairing sender reputation mid-campaign
Running a data health analysis now means you go into the busiest months with a list you can trust, rather than finding out the hard way in October.
What a Free Data Health Analysis Actually Checks
A proper data health analysis is not a quick scan for typos. It looks at your database across several dimensions:
- Email validity and bounce risk
- Duplicate and outdated records
- Job role and company accuracy
The output is a straightforward report: what is usable now, what needs attention, and what should be removed before it damages your sender reputation.
Because it is offered as a free data health analysis, there is no cost or commitment attached to finding this out. You get the picture first, and decide what to do with it afterwards.
Why B2B Data Decays Faster Than Most Teams Realise
Data decay is not a hypothetical risk. Industry benchmarks consistently put B2B database decay at around 2.1% a month, compounding to roughly 22.5% a year. In faster-moving sectors, the figure climbs considerably higher.
The reasons are structural rather than random:
- Around 15-20% of professionals change job annually, and a single move invalidates a job title, email address, and often a direct phone number in one go
- Average tenure in a role continues to shorten, particularly in technology and fast-scaling sectors
- Company mergers, rebrands, and office moves invalidate entire blocks of contacts at once
Left unchecked, a database bought or built at the start of the year can be a fifth wrong by the time autumn campaigns ramp up. That is not a one-off cleaning job. It is a continuous leak that only ongoing checks can catch.
The Compliance Angle: Why This Matters More in 2026
Data quality used to be framed purely as a performance issue - more bounces, lower open rates, wasted send volume. Under the Data Use and Access Act 2025 (DUAA)(opens in new tab), it is increasingly a compliance issue too.
Most of the DUAA's reforms to UK GDPR came into force in February 2026, and further obligations follow through the year, including a mandatory data protection complaints process for organisations from 19 June 2026. Alongside this, penalties for breaches of the Privacy and Electronic Communications Regulations (PECR), which govern email marketing, have been raised to align with UK GDPR fine levels.
None of this means your marketing database needs a total overhaul. The core principles are unchanged: you should only hold data that is accurate, relevant, and used fairly. But it does mean a stale, unverified list is no longer just a performance problem heading into a busy autumn. It is a record you may struggle to justify if a subject access request or a complaint lands on your desk.
What You Get From a Free Data Health Analysis
Within a short turnaround, you receive a clear, jargon-free report covering:
- The proportion of your list that is genuinely deliverable
- Which segments are decaying fastest, and why
- Any obvious compliance gaps worth addressing
- Practical next steps, whether that is cleaning, appending, or leaving a segment as is
There is no obligation to act on the findings with us. Plenty of teams simply use the report to inform an internal clean-up before autumn campaigns launch. For others, it becomes the starting point for a wider conversation about keeping data accurate on an ongoing basis, rather than treating it as a one-off purchase.
Would you like a free Data Health Analysis?
If you cannot remember the last time your database was properly checked, that is usually a sign it is due one - and there is no better time than now, before the year's busiest stretch begins.
A Free Data Health Analysis takes the guesswork out of the question and gives you a clear, evidence-based view of where you stand.
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Call us on 01723 800030