Best B2B Lead Generation Agencies
Agencies that research and build targeted B2B lead lists and run outbound to turn them into pipeline.
Belkins
B2B lead generation and appointment setting agency running omnichannel outbound across email, LinkedIn and phone since 2017.
Appointment setting · Cold email · LinkedIn outreach · Cold calling · Lead list building
CIENCE
Managed B2B lead generation with outsourced SDR teams, audience data and outbound campaigns, from $2,000 a month.
Outsourced SDRs · Appointment setting · Lead list building · Cold email · Cold calling
Martal Group
Canadian outsourced sales and lead generation agency whose SDRs run email, LinkedIn and calling for B2B tech companies.
Outsourced SDRs · Lead list building · Cold email · LinkedIn outreach · Cold calling · Appointment setting
Leadium
B2B lead generation agency focused on top-of-funnel data and appointment setting, run by managed SDR teams.
Appointment setting · Lead list building · Cold email · Outsourced SDRs
Callbox
Long-running B2B lead generation and appointment setting company that books meetings with decision makers, with 20+ years of campaigns.
Appointment setting · Cold calling · Lead list building · Cold email
SalesBread
LinkedIn lead generation agency that aims to deliver one qualified B2B lead per day through ultra-personalized outreach.
LinkedIn outreach · Appointment setting · Lead list building
Sopro
UK prospecting service that finds ideal prospects and runs multichannel outreach, connecting interested buyers directly to you.
Lead list building · Cold email · LinkedIn outreach · Appointment setting
Growth Engine X
Cold email agency sending 8 million+ emails a month for B2B companies with $1M+ revenue, with a free test campaign.
Cold email · Clay and GTM engineering · Lead list building · Email deliverability
Abstrakt Marketing Group
St. Louis B2B lead generation company whose US-based SDRs set guaranteed appointments for service and trade businesses.
Appointment setting · Cold calling · Outsourced SDRs · Lead list building
Launch Leads
B2B appointment setting company booking qualified conversations with decision makers since 2009, with 152K+ appointments set.
Appointment setting · Cold calling · Lead list building
Pearl Lemon Leads
London lead generation agency booking qualified B2B sales calls through cold email, LinkedIn, telemarketing and appointment setting.
Lead list building · Cold email · LinkedIn outreach · Cold calling · Appointment setting · Outsourced SDRs
The Kiln
GTM engineering agency of Clay experts and former Clay employees building custom outbound, inbound and RevOps workflows.
Clay and GTM engineering · Lead list building
LeadBird
Done-for-you B2B lead generation across cold email, calls and LinkedIn, with pay-per-lead pricing and leads synced to your CRM.
Cold email · Lead list building · LinkedIn outreach · Cold calling
Lead Cookie
Quality-first B2B lead generation agency that hand-researches every prospect for LinkedIn and email outreach, from $1,500 a month.
LinkedIn outreach · Cold email · Lead list building
Hypergen
B2B cold email agency using intent data to reach prospects showing buying signals, with 120+ clients booked meetings.
Cold email · Lead list building · Appointment setting
How to choose a B2B lead generation agency
A B2B lead generation agency finds and qualifies potential customers for you. Some focus on research and list building, delivering targeted contact lists ready for your team. Others run the full process, from building lists to outreach and booking meetings.
List building or full service?
If you already have a team and sending tools, a list building service that delivers researched, verified contacts can be the most cost-effective option. If you don't have the people or systems, a full-service agency that runs outreach and books meetings will get you further, at a higher price.
What to compare
- Research depth. Hand-researched lists tailored to a narrow profile usually outperform large database exports. Ask how each contact is found and checked.
- Data sources and verification. Ask which databases and enrichment tools they use and how they verify emails and phone numbers.
- Signals and intent. Some agencies prioritise companies showing buying signals, such as hiring, funding or website visits, which improves timing.
- Deliverables. Clarify whether you get contacts, conversations or meetings, and in what volume each month.
- Compliance. If you target Europe, ask how the agency handles GDPR for the data it collects.
Pricing
List building is often priced per contact or per monthly batch, while full-service lead generation is usually a monthly retainer, sometimes with performance fees. Compare the cost per qualified lead or meeting rather than the headline price. To build lists yourself, compare lead data and enrichment tools.
Frequently asked questions
What does a B2B lead generation agency do?
It finds potential customers that match your ideal profile, researches and verifies their contact details, and, depending on the service, runs outreach to turn them into conversations or meetings.
What is the difference between list building and lead generation?
List building delivers researched contacts for your team to reach out to. Full lead generation also runs the outreach and follow-up, handing you interested prospects or booked meetings.
How much does B2B lead generation cost?
List building is often priced per contact or batch, while full-service lead generation usually costs a monthly retainer starting from a few thousand dollars. Compare the cost per qualified lead.
Are purchased lead lists worth it?
Generic purchased lists tend to perform poorly. Lists researched for a narrow, well-defined target and verified before use perform much better.
How do lead generation agencies find contacts?
They combine B2B databases, enrichment tools, LinkedIn research and buying signals, then verify contact details before delivering them or starting outreach.
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