Experian received top ranks for hashed emails (HEMs) and demographic data from Truthset Data Collective

Advertisers, technology partners, and agencies are all chasing accurate data to power their marketing strategies. Turns out, not all data is created equal and unless you’re working with the right partner, high-quality data can be hard to find. That’s because accuracy can vary widely across the industry and the partner you choose is important. A recent study conducted by data validation company Truthset showed that 51% of the data used for ad targeting and audience measurement is wrong, with average accuracy rates ranging between 32%-69% across data providers.
The data quality challenge
The lack of high-quality data poses multiple challenges in the advertising world:
- Wasted ad spend: without accurate data at the start, marketers can’t reach the right audiences, resulting in wasted impressions.
- Privacy and compliance: in an increasingly privacy-centric world, advertisers need to be especially mindful of accurate targeting to avoid putting their brand reputation at risk.
- Poor campaign performance: low-quality data skews metrics and attribution models, making it difficult to measure campaign success and optimize spend.
Low-quality data can come in different forms like inconsistent or outdated information – think demographics (age, gender) and interests (dog versus cat lover) or simply the wrong relationship can be made between datasets. Data records can be incomplete or duplicative and data segments could be misclassified or inaccurate. For example, a kids snack food company may think they’re targeting a 35-year old man, who lives in the suburbs with his young family when in fact it’s a 65-year-old woman who moved to the city after her kids went to college. It’s wasted dollars!
Build the data foundation
Data quality needs to be addressed if advertisers and advertising technology partners want to fulfill consumers’ demand for personalized marketing. Per eMarketer, more than 75% of internet users worldwide said they were willing to share their email address, brand interest, and name in exchange for personalized experiences. Without accurate data, marketers won’t be able to provide the level of personalization that consumers desire.
Validation can help advertisers evaluate third party data and help build trust across the ecosystem. Companies like Truthset review and provide an unbiased evaluation of data fidelity and quality on a regular basis.
“As cookies and mobile ad identifiers continue to phase out, consented, durable identifiers (hashed email, postal addresses) are going to serve as the foundation for identity solutions of the future,” said Chip Russo, President at Truthset. “And the only way to ensure you are transacting on the highest quality identity and demography data is to actively validate the data you rely on with a third party.”
Not all data is created equal: Experian leads the way
In Q3 2023 Truthset reviewed Experian’s marketing data – as well as several other large data providers – and found:
- Experian is the #1 data provider in terms of largest volume of high-accuracy hashed e-mails (HEMs) with demographic data
- Experian ranks #1 in accuracy for 15 marketing data attributes, including but not limited to Age, Gender, Home Owner/Renter, Geography, Education, Presence of Children, and Pet Owner
- Experian consistently has the largest number of HEMs with demographic data that are 90% or more likely to be accurate
“As a member of the Truthset Data Collective, Experian received top ranks across a variety of categories for its data,” continued Russo. “The entire digital advertising world runs on data, but focusing on data accuracy is going to drive the next phase of innovation for the industry, enhancing ROI for advertisers, CPMs for publishers, and relevant experiences for consumers.”
As Truthset’s recent study highlights, the data matched between hashed e-mails and postal addresses is crucial, underpinning everything from targeted ads to TV audience measurement. Highly accurate HEMs linked to high-quality demographic data should be the foundation of any marketing plan. Advertisers are able to overcome the complexities of identity resolution by tying online and offline touchpoints together to deliver a consistent message across channels.
Companies are striving to eliminate marketing waste and provide consumers with personalized marketing and the advertising industry can have confidence that Experian’s marketing data has been externally validated as being highly accurate. The accuracy of our data will power smarter marketing initiatives, like insights, targeting, identity, and measurement.
Let’s start a conversation about how we can fully realize the potential of data-driven advertising together.
Latest posts

The vast majority of Facebook visitors—like most Internet users—say they like websites that take special care to protect their privacy. Yet as the popularity of Facebook grew during 2009 among both younger and older adults, there was a general waning in visitors’ advocacy of online privacy. In fact, the share of Facebook visitors sensitive to privacy protection experienced a 9% relative decline between January and November of 2009. That decline may have continued, were it not for a series of privacy policy updates issued by the social networking giant. In November 2009, Facebook changed its default settings to publicly reveal a larger than before amount of its users’ information. Then in December 2009, the privacy settings were entirely removed from certain categories of users' information. And lastly, in April 2010, users’ General Information became publicly exposed whenever they connected to certain applications or websites, a move that seriously angered many Facebook adherents. Following these changes, the share of Facebook users who are sensitive to privacy protection rose. Specifically, between November 2009 and April 2010, the percent of users who like sites that protect their privacy increased a relative 7%. Facebook’s decision to return, and even simplify, control over privacy settings to account holders may appease users, but whether a subsequent drop in support of online privacy will ensue down the line is far from certain.

Same-sex marriage is a hot button topic no matter on which side of the issue you stand. But there can be no denying that same-sex couples are finding an expanding number of options in the U.S. and abroad should they decide to legally wed. The 2010 LGBT Consumer Report explores the household arrangements and behaviors of America's LGBT consumers—in particular, those associated with marriage—compared to America's heterosexual population. You will learn that despite being less than half as likely to be married, lesbian, gay and bisexual adults are 22% more likely than their "straight" counterparts to have recently wed or to be planning nuptials for the next year. Looking for that perfect gift for the newly wed couple? You will also get some shopping tips for identifying favored retailers of lesbian, gay and bisexual shoppers. We'll start by sizing the LGBT market. An estimated 3.7% of the non-Hispanic adult population (7.1 million adults) self-identifies as LGBT, which can be broken down as follows: The average heterosexual adult lives in a household with 1.9 other individuals, including adults and kids. By comparison, the average lesbian shares her home with only 1.6 other people. Gay men live in the smallest households, sharing their home with only one other person, on average. Over a third of gay or bisexual men (38%) share their home with at least one other adult male, compared with only 24% of heterosexual men who live under the same roof as another adult male. Thirty-five percent of gay or bisexual men say they live with one (and only one) other adult male, a living arrangement that has a higher chance of consisting of a same-sex, co-habiting couple. Over half of lesbians or bisexual women (53%) share their home with at least one other adult female, compared with only 23% of heterosexual women who live under the same roof as another adult female. Forty-three percent of lesbian or bisexual women say they live with one (and only one) other adult female, a living arrangement that has a higher chance of consisting of a same-sex, co-habiting couple. Lesbian, Gay and Bisexual adults (LGB) as a group are less than half as likely as heterosexuals to be married. Only 26% of LGB adults are wed, compared with 57% of “straight” adults. Of all LGB adults, bisexuals are the most likely group to be married, with over 4 in 10 reporting they are presently wed. Lesbians are more than four and a half times more likely than gay men to be married, with 23% of lesbians having tied the knot versus only 5% of gay men. Lesbian, gay and bisexual adults as a group are 22% more likely than heterosexual adults to have either tied the knot in the last 12 months or have plans to wed in the coming year. 5.7% of lesbian, gay or bisexual adults are newly weds or “soonly” weds vs. 4.6% of heterosexual adults. Lesbian, gay and bisexual adults are twice as likely to shop at Neiman Marcus, making the department store the number one retailer with a wedding registry program among LGB shoppers. With many retailers ending their registry programs in favor of gift cards, we looked at how stores without registry programs stack up among lesbian, gay and bisexual shoppers. LGB adults are almost twice as likely to shop at J. Crew, making the store the number one retailer without a wedding registry program among LGB shoppers.