Where to buy email lists: 7 top databases

Buying an email list means purchasing verified B2B contact data from a provider rather than building a list manually. The best providers combine data accuracy, GDPR and CCPA compliance, and integration with your existing CRM and sales tools. Pricing and coverage vary widely between providers, from all-in-one platforms with phone-verified mobiles to lower-cost tools focused purely on email lookups.

Buying email lists is one of the most impactful ways of reaching potential customers at scale. However, purchasing them from the wrong providers can damage your brand reputation and affect your email deliverability.

In this article, we compare the best places to buy B2B email lists, including renowned data providers where you can access compliant email addresses with confidence. We'll focus on the factors that ensure the highest deliverability and compliance with the law.

1. Cognism

Cognism is a GTM intelligence and data infrastructure partner for revenue teams selling into Europe, North America, and APAC. As well as being your revenue teams' trusted companion for email addresses, Cognism is your partner for data that is consistently accurate, reliably fresh, compliant, and available wherever you need it.

Here's what makes Cognism a strong fit for mid-market and enterprise organisations:

• Data quality and compliance – Cognism is purpose-built for mid-market and enterprise companies selling into Europe, with local expertise and a data engine that self-corrects for accuracy.
• GTM intelligence platform – more than just a data provider, Cognism turns raw information into actionable insight, so revenue teams know when and why to act.
• CRM cleanliness – ensure the freshness of your European CRM records with data enrichment via CSV or APIs.
• Data infrastructure and delivery – the Cognism API and MCP deliver data wherever you need it, whether that's a CRM sync, a data warehouse, or an AI assistant.

Key features

• Quality EU B2B data that you won't find anywhere else, delivered where you need it.
• A data verification engine with a five-step process, leading to higher connect rates and lower email bounce rates.
• An AI Search functionality that builds relevant lead lists quickly.
• Fully complies with global data laws, including GDPR and CCPA compliance.
• Integrates with leading B2B tools, including your CRM, data warehouses, and outreach platforms.
• Includes intent data, firmographic and technographic data.
• Includes unrestricted access to person and company-level data, with no credit limits or geographical restrictions.

Pricing

• Cognism offers two pricing plans: Standard (starting at $12,750) for essential quality data for prospecting, and Pro (starting at $17,000) for advanced intelligence and actionable insights. Both packages include 5 user seats.
• Each charges a flat platform access fee that covers data maintenance, set-up, onboarding, and 24-7 live chat support.
• Works on a credit basis, with 10,000 annual credits included in the Standard package and 12,000 annual credits included in the Pro.
• The Pro package also includes a filter for premium mobile phone numbers, access to a verified on-demand service for mobile numbers, and intent data.
• Integrations are included in every package.

“Our open rates used to be between 2-6%. Now they range from 40% to 60% which is phenomenal compared to before - far above the industry average for B2B cold lead email campaigns. These high engagement rates wouldn’t be possible without GREAT data.”

Read the full case study

Elaine Fullarton
Marketing Principal @Tharsus

2. Kaspr

Kaspr is an email list-building tool and part of the Cognism Group. Whereas Cognism is for large organisations and sales teams, Kaspr is best for individual contributors, including reps, recruiters and founders. It offers an intuitive Chrome Extension that allows users to surface emails from LinkedIn profiles.

Key features

• Instantly reveals verified contact info from LinkedIn profiles, including phone numbers, email addresses, and company information.
• Integrates with HubSpot, Pipedrive, Lemlist, Salesforce, and more.
• Supplies email list data that's GDPR and CCPA aligned.

Pricing

Kaspr offers free and paid pricing plans. Monthly subscriptions start at 45 EUR per user, per month, with unlimited B2B email credits on all plans. See how Cognism compares to Kaspr.

3. ZoomInfo

ZoomInfo is a market-leading email list seller. Many B2B companies use it as a one-stop shop for purchasing email lists for their account-based marketing campaigns.

According to a CB Insights survey, some customers voiced dissatisfaction with ZoomInfo's lack of core product innovation, particularly its contact data quality.

Key features

• Offers advanced search features and filters to help users identify potential leads.
• Intent data provider – allows users to select search queries and receive updates on companies searching for a solution.
• Tracks key contacts for job changes and notifies users when a contact starts a new job or role.

Pricing

ZoomInfo's pricing depends on the package or product suite you need – Sales, Marketing, or Talent. It bases its pricing on licences and credit usage, along with desired features. See how Cognism compares to ZoomInfo.

4. Lead411

Lead411 is another B2B email list company that lets users buy and build lists for marketing and sales. It offers verified mobile phone, email and company data. Some G2 users have called Lead411 out for incomplete or inaccurate data.

Key features

• Helps users find prospect details while browsing LinkedIn profiles.
• Helps users find out what topics, industries, and content their ideal customers are interested in.
• Tracks key events like new locations, IPOs, and hiring.

Pricing

Plans start at $99 per user, per month, with a 7-day free trial. See how Cognism compares to Lead411.

5. Lusha

Lusha is a B2B data provider and lead generation tool. Sales and marketing professionals use it to find details like phone numbers, email addresses, and social media profiles. Some G2 users say Lusha's data quality could be better.

Key features

• Provides detailed contact information, including full name, job title, company name, and more.
• Offers advanced search filters to help users build precise contact lists.
• Provides ideal customer profile insights based on past searches.

Pricing

Lusha's pricing starts at $37 per user, per month, with a free plan available. See how Cognism compares to Lusha.

6. Hunter.io

Hunter.io is an email outreach and verification tool that helps businesses connect with ideal customers and partners. It offers a variety of features, including verified data for emails, a Chrome extension, and bulk email management. Some G2 users have expressed reservations about Hunter's data accuracy.

Key features

• Lets users find email addresses by entering a domain name or typing in a name.
• Verifies emails, including individual emails and entire lists.
• Provides access to free cold email templates.

Pricing

Paid plans start at £28 per user, per month (billed annually), with a free version available. See a list of the top Hunter.io competitors.

7. Apollo.io

Apollo.io is a notable tool with list-building features. Its cloud-based platform helps businesses find and engage with potential customers. Some G2 users have said that Apollo's emails and numbers are outdated.

Key features

• Offers a B2B contact database containing over 200 million contacts and 60 million companies.
• Provides customisable sequences for email, LinkedIn, and cold calls.
• Monitors open rates, click-through rates, and other key metrics.

Pricing

Apollo.io's pricing plans start at $49 per user, per month, with a free plan available. See how Cognism compares to Apollo.

Top email databases compared

What should I look for when buying email lists?

To ensure you purchase a high-quality B2B email list, follow this checklist:

• Compliance – make sure the email lists you buy comply with applicable privacy regulations, ideally from a provider that's ISO 27001 and ISO 27701 certified and SOC 2 Type II attested.
• User reviews – check review sites such as G2, Trustpilot, or Capterra to confirm the provider is trustworthy, paying particular attention to negative reviews.
• Email quality – check how the company manages data quality and how often it updates its data.
• Pricing – price and quality often go together, so don't default to the cheapest option.
• Ease of use – choose a platform your team can adopt quickly.
• Integrations – make sure purchased lists integrate with your CRM and other sales tools.
• Additional features – look for intent data and sales triggers to help prioritise contacts.
• Filtering options – advanced filters help you reach the right accounts and decision-makers.

What are the red flags when purchasing email lists?

Here are some red flags that suggest you may be dealing with an untrustworthy email list seller:

• Low prices as the main selling point – cheap lists or time-sensitive discounts are a warning sign; the data is most likely sourced from questionable places.
• No segmentation – if you can't filter by target criteria, expect low-quality data and prospects who won't engage.
• Untrusted sources – be wary of lists sold by unknown vendors, with no guarantee that prospects gave permission for their information to be shared.
• Unverified or outdated emails – old or invalid addresses damage your email deliverability and reputation.
• Lack of legal compliance – buying lead email lists can violate laws such as the CAN-SPAM Act or GDPR, so always verify the provider's compliance credentials.

Choose a compliant place to buy email lists

Cognism gives you unrestricted access to contact and company-level data, so you can build B2B email and phone number lists in the US and Europe. It's built for B2B sales, marketing, and RevOps teams targeting EMEA, DACH, or the USA, with compliance factored in.

Frequently asked questions