Best for: Cost-effective lead generation with intent data

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Lead411

Lead411 combines verified B2B emails with intent signals to help marketers reach prospects who are actively researching solutions like theirs.

Pros: Affordable, local intent data, regular updates.

Cons: Interface not as modern as others.

Integrations: Salesforce, HubSpot, Zapier.

Pricing: From $99/month.

9. Hunter.io
Best for: Finding emails from company domains

Hunter is a lightweight tool perfect for quickly finding business email antigua and barbuda business email list addresses based on company domains or names. Best used for manual prospecting.

Pros: Chrome plugin, free searches, email verification.

Cons: Limited database; not suitable for bulk lists.

Integrations: Gmail, Zapier, HubSpot.

Pricing: Free plan; paid starts at $49/month.

10. CIENCE GO Data
Best for: Combining lead data with outreach services

CIENCE offers its proprietary GO Data platform bundled with outbound sales services. Ideal for companies looking to outsource lead generation.

Pros: Accurate data + SDR support, custom campaigns.

Cons: Better as a service than a self-serve platform.

Integrations: HubSpot, Salesforce, Outreach.

Pricing: Bundled with CIENCE packages.

Comparison Table: B2B Email List Providers at a Glance
Provider Accuracy Intent Data Price Range Best For
ZoomInfo 95%+ Yes $$$$ Enterprise ABM & enrichment
Apollo.io 90%+ Yes $–$$ Startups & automation
UpLead 95%+ Yes $$ Verified emails
Lusha 92%+ No $–$$ Sales reps, direct dials
Clearbit 90%+ Yes $$$ SaaS enrichment
Cognism 95%+ Yes $$$$ GDPR/EU compliance
SalesIntel 95%+ Yes $$$ Human-verified contacts
Lead411 90%+ Yes $$ Intent-based outreach
Hunter.io 85%+ No $ Manual email discovery
CIENCE 90%+ Yes $$$ Outsourced prospecting

Common Mistakes to Avoid When Buying B2B Email Lists
Buying from unverified sources – Cheap list sellers often provide scraped, outdated, or illegal data.