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Data Quality
Monthly Cleaning Cycle


Multi Channel Verification

Verification Calls

Unlike any other UK data provider our information is never more than 12 months old. As part of this process we physically call over 170,000 businesses every month.

Royal Mail

Our data is validated against the Royal Mail Postal Address File (PAF) and checked against the most recent ‘gone away’ files to ensure accuracy.

Data Bureau

The data is then compared against all other information files held by our data bureau to make certain it is both accurate and complete.


Checks and Verifications

At IDG we understand that business data comes in all shapes and forms, which is why we operate three separate levels of checks and verifications.

Level One

We check the company name and telephone number directly to guarantee accuracy. A follow up call will then be made for complete verification.

Level Two

The type of industry the company works in, employee size and email verification will all be carried out for a more detailed data analysis.

Level Three

For a thorough breakdown, IDG will confirm all direct marketing information, company address and the job title of all contacts.


97% Accuracy

Checks and Verifications

For complete peace of mind we write our quality guarantees into our Terms & conditions, something no other B2B data company does.

Mailing & Telephone

We deliver the highest quality data available within the marketplace, offering a 98% accuracy guarantee on all our mailing and telephone records. If we fail to achieve this, we will offer a 2-for-1 replacement on any inaccurate records. In all our years of trading our 98% accuracy test has only been broken a handful of times.


The world of email marketing moves at an extremely fast pace yet we are still able to guarantee 95% will be delivered.
If for any reason our marketing emails have a hard bounce rate which is greater than 5%, we will simply replace them for you.
In fact so confident in our guarantee are we – we simply over deliver by 5% in order to ensure the very best client experience.

74% Retention

IDG Quality

  • We supply the highest quality data available within the marketplace
  • Our experienced Account Managers are the very best in the industry
  • We can help you achieve the highest Return On Investment results possible

Our reputation for quality is well known and it’s just one of the reasons our business retention rates are so high. You can rely on IDG to deliver accurate, comprehensive business data which directly complements your marketing campaign.

Account Managers

Account Managers

  • Professional Account Managers to guide you through every part of the data process
  • Dedicated Fulfilment Managers to keep you informed of progress
  • Extensive experience in the competitive DM Market
  • Monthly Customer Survey conducted and published to keep you up-to-date

Excellent customer service lies at the heart of everything we do. Unlike other data providers, we go that extra mile to make sure you are happy with our service at every stage.


Quality data with highest quality guarantees

Secure the highest ROI possible

Partner with IDG, the industry leader

Get ahead of your competition by partnering with the best in the market

Return of Investment

Key Points

  • Our data quality guarantees are the highest in the industry
  • As the industry leaders we can help you get ahead of the competition
  • We can secure you the highest Return of Investment rate possible

Independent Survey
Batch % CorrectTelephone % Correct Company % Connect to correct company % Address Line 1 correct % named contact correct
IDG 99% 97% 97% 94% 89%
File 2 98% 95% 95% 90% 88%
File 1 98% 95% 95% 77% 73%
File 3 98% 94% 94% 89% 71%
File 4 95% 83% 84% 86% 73%
Total 97% 93% 93% 87% 83%

Independent Telephone Survey

  • For connections made by telephone IDG were better than the average by 2%.
  • Intelligent Data Group also performed better than all our competitors with their scores averaged out, beating them by 4%, plus significantly higher results than the poorest performing company, with a 14% improvement on their score for connections made between numbers and the right address.
  • Precision in supplying addresses as our results are significantly better by 7% to our typical rival.
  • The average score achieved by our competitors was just 83% compared to 89% accuracy achieved by our contact names provided.
Sent % Open % Hard Bounce % Soft Bounce % Total Bounces
IDG 500 19% 2% 5% 7%
File 1 500 4% 4% 12% 16%
File 2 500 4% 3% 14% 17%
File 3 500 3% 3% 9% 12%
File 4 500 3% 2% 9% 11%
Total 2500 7% 3% 10% 12%

Independent Email Survey

  • IDG open rates were FOUR TIMES higher than our leading competitors
  • Our bounces levels were 5% lower than any other supplier
  • Our average hard bounce rate was just 2%, 1% lower than our average competitor
  • Our average soft bounce rate was HALF the rate of our average competitor
Take Away Points
Monthly Cleaning Cycle

Our customers return to us again & again & again.

IDG have one of the highest retention rates in the data industry, with 76% of our customers using our services again.
Monthly Cleaning Cycle

We invest our data into your business.

High quality data is central to both our business and yours. We invest our time, staff and data into every client we work with to guarantee the best possible outcome.
97% Accuracy

Our data is 98% accurate

At IDG, we pride ourselves in the knowledge that our data is considered to be the most accurate in our industry.
Monthly Cleaning Cycle

High Return on Investment

Your experience is so important to us and our main aim is always to ensure you receive a high ROI on any direct marketing campaign.

Keep in touch with us

We can Help You. Call Us 0333 030 6636

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