Best B2B Lead Generation Companies and Services

Every lead generation company on this page will tell you it delivers qualified leads. Almost none of them will tell you what "qualified" means in their contract, or what it costs per meeting once the setup fee clears.

That gap is the whole problem with shortlisting one. Two agencies quote you $6,000 a month. One counts a lead as a downloaded whitepaper, the other counts it as a held meeting with a decision maker. Same invoice, wildly different business.

So this guide splits the category in two, because the two halves are not interchangeable and most roundups blur them. Twelve of the companies below are done-for-you agencies that run the outreach and hand you meetings. Five are data platforms that hand you the contacts and let your own team do the work. The first group bills in thousands per month, the second in tens.

Prices below come from published pricing pages and reported 2026 retainers, and review scores are as of September 2026. Where a company publishes nothing, the entry says so rather than guessing.

TL;DR, the best lead generation companies and what each one costs#

What lead generation companies actually do#

A lead generation company finds people who might buy from you and gets them into a conversation with your sales team. It is one arm of B2B demand generation, the part pointed at named accounts rather than at the market. The work splits into six jobs, and the price you pay depends entirely on how many of them the company takes off your hands.

1. Define the ideal customer. Firmographics, job titles, the trigger events worth chasing.
2. Build the list. From a database, a publisher network, or manual research. This is email list building with a budget attached.
3. Verify it. Bad addresses bounce, bounces damage sender reputation, and damaged reputation ends the campaign.
4. Run the outreach. Cold email, LinkedIn, calls, sometimes paid ads, usually several in sequence.
5. Qualify the replies. Against budget, authority, need and timing, or whatever criteria the contract names.
6. Hand off. A booked meeting in a rep's calendar, or a CSV in your CRM, entering your sales pipeline at the top.

A full-service agency does all six and charges thousands a month for it. A data platform does jobs two and three, hands you the output, and charges tens of dollars a month. Everything in this guide sits somewhere on that line, and knowing where is most of the buying decision.

Worth noting before you shortlist. According to G2's lead generation research, the gap between marketing-qualified and sales-accepted leads is where most agency relationships break down, so agree the definition of a qualified lead in writing before the first invoice.

Compare all 17 lead generation companies and services#

Scroll the table sideways to see all columns.

Agency retainers are reported market rates, not published list prices, because none of the twelve agencies publish a rate card apart from Cleverly. Treat them as the range to budget against, then get the quote.

Lead generation agencies, reviewed#

These twelve run the outreach for you. You buy capacity and expertise rather than software, and the invoice does not change if your team gets better at outbound.

1. Belkins#

Belkins is the most consistently well-reviewed appointment-setting agency in this category, rated 4.7 on G2 and 4.9 on Clutch across 230+ verified reviews as of September 2026. Founded in 2017, it now reports 2,000+ clients across 50+ industries and more than 200,000 appointments booked.

What separates it from the mid-market pack is the motion. Belkins runs a genuine omnichannel programme, cold email plus LinkedIn plus cold calling, with a dedicated account manager and SDR team on each account rather than a shared pool.

What it does#

• Appointment setting end to end, from ICP definition through to a meeting in your rep's calendar.
• Omnichannel outreach across cold email, LinkedIn and cold calling, with SMS and WhatsApp available on request.
• Deliverability management including domain setup and warm-up, handled in-house.
• Copywriting for sequences and supporting content.
• Dedicated pod per client, so the people who learn your market stay on it.

Up next, CIENCE.

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2. CIENCE#

CIENCE is one of the largest outbound-as-a-service providers, combining a proprietary data layer with managed SDR teams. It is also the most divisive entry here, rated 3.8 on G2, and the reviews split hard between clients who valued the process rigour and clients who felt the leads were thin for the price.

The pricing structure explains a lot of that. CIENCE charges roughly $5,000 for go-to-market setup before campaigns start, then $2,499 and up per month for management. SDRs are an add-on, from about $1,500 a month offshore to $5,500 onshore, and held meetings are often billed separately near $250 each. Reported cost per qualified lead frequently clears $300.

What it does#

• Managed SDR teams, onshore or offshore, working your accounts.
• Proprietary research and data, built rather than bought.
• Multi-channel outbound across email, calling and social touches.
• CRM integration so meetings and activity land where your reps work.
• Inbound qualification as an add-on to the outbound programme.

Up next, LeadHaste.

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3. LeadHaste#

LeadHaste is a managed B2B outbound agency that runs cold email end to end and registers every piece of the setup in your name. Domains, mailboxes and prospect data belong to the client from day one, so if the engagement ends you keep the warmed infrastructure rather than starting again. In a category where agencies usually send from their own domains, that is the differentiator worth checking.

The delivery model is signal-driven rather than volume-driven. Campaigns track buying signals across roughly a dozen families, funding rounds, hiring patterns, promotions and tool changes among them, and the agency contacts around 10,000 prospects a month across a managed pool of sending domains and inboxes. Reply handling and qualification are included, with LinkedIn outreach and an AI reply agent sold as separate add-ons. The base engagement is $2,500 a month plus infrastructure billed at cost, with a three-month minimum before it moves to month-to-month.

What it does#

• Managed cold email, prospect sourcing through to booked meeting, run by the agency.
• Client-owned infrastructure, sending domains, mailboxes and data registered to you.
• Signal-based targeting against funding, hiring, promotion and tool-change triggers.
• AI-assisted reply handling to qualify responses before they reach your reps.
• Optional LinkedIn outreach, priced per profile on top of the base retainer.

Up next, Martal Group.

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4. Martal Group#

Martal Group is a B2B lead generation agency built around technology and SaaS clients, rated 4.6 on G2 from 131 reviews with an NPS of 83 as of September 2026. It also carries Clutch Champion status across 109 reviews.

The commercial model is the interesting part. Martal charges a flat monthly fee for the standard lead generation tier, then adds commission on closed-won deals, so a portion of its revenue depends on your revenue. Engagements are reported between $5,000 and $60,000 depending on scale. Three tiers are on offer, the first covering lead generation alone, the second adding deal closure and onboarding, the third adding account management.

What it does#

• Outbound lead generation aimed at technology buyers specifically.
• Account-based marketing against named high-value target accounts.
• Appointment setting with qualification before the handoff.
• Optional deal closure and onboarding on the higher tiers.
• Fractional sales leadership for teams without a VP of Sales yet.

Up next, Callbox.

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5. Callbox#

Callbox is a global lead generation and appointment-setting agency rated 4.5 on G2 from 91 verified reviews as of September 2026. Its strength is geographic. Callbox runs delivery across North America, EMEA and APAC, and the calling motion is genuinely strong in markets where cold email response rates have collapsed.

Pricing is subscription-based rather than per appointment, typically starting around $4,000 to $5,000 a month for entry campaigns and climbing into low five figures. A package bundles the outsourced team, the campaign assets and the execution, with the final number set by target industry, market reach and campaign complexity.

What it does#

• Multi-touch campaigns across calling, email, social and web.
• Appointment setting with confirmation and reminder handling.
• Global delivery with native-language teams in key markets.
• Account-based approaches for named target lists.
• Marketing and sales assets produced as part of the package.

Up next, Operatix.

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6. Operatix, a memoryBlue company#

Operatix has been part of memoryBlue since the July 2023 acquisition, and its site now carries memoryBlue branding. Worth knowing, because most roundups still list the two as separate companies. The combined group runs six offices, 600+ sales professionals and support for 30+ languages.

Operatix itself remains the EMEA and APAC delivery arm, focused narrowly on B2B software and SaaS. SDR pods are organised around technology verticals and built for complex, long sales cycles, with delivery from the UK, US and Singapore covering 20+ languages and 100+ countries.

What it does#

• Outsourced sales development as an extension of your own team.
• Multi-language SDR delivery across EMEA and APAC.
• Inbound lead qualification alongside outbound prospecting.
• Channel and partner development for vendors selling through resellers.
• Vertical SDR pods organised by technology segment.

Up next, Cleverly.

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7. Cleverly#

Cleverly is a LinkedIn-first lead generation agency, and it is the only agency in this guide that publishes a rate card. Plans start at $297 a month for the Silver tier covering roughly 250 prospects, $397 for Gold, and rise past $997 for premium tiers that add A/B testing and dedicated account management. Enterprise is custom.

Two caveats belong next to those numbers. LinkedIn Sales Navigator is not included and runs $99 a month or more, so the real floor is closer to $500. And Cleverly asks for a three-month minimum with no per-meeting guarantee, so you pay the retainer whether the campaign books twenty meetings or zero.

What it does#

• LinkedIn outreach at scale, connection requests through to booked conversations.
• Data-driven copy built from past campaign performance across its client base.
• Profile optimisation so the outreach lands on a page that converts.
• Lead nurturing through follow-up sequences on LinkedIn.
• Cold email programmes sold separately, priced on meeting-ready leads.

Up next, OutreachBloom.

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8. OutreachBloom#

OutreachBloom is a done-for-you B2B lead generation agency that runs the entire cold email operation, from ICP definition and list building through inbox setup, warming, copywriting, sending and reply management. Nothing gets handed back to your team halfway through.

The differentiator in 2026 is the AI search visibility work sold alongside outbound. OutreachBloom builds Reddit citations and authority signals so brands surface inside ChatGPT, Claude, Gemini and Perplexity, and reports one client moving from 14% to 61% share of tracked prompts over 90 days. Contracts are month-to-month, which is unusual in a category that normally asks for six.

What it does#

• Full-service cold email, strategy through reply management, handled in-house.
• ICP-driven sequences built around buying signals rather than volume blasts.
• Deliverability infrastructure, warmed sending domains and inbox rotation.
• AI search visibility, Reddit citation building and authority signals.
• LinkedIn outreach alongside the email programme.

Up next, UnboundB2B.

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9. UnboundB2B#

UnboundB2B is a demand generation company rather than a classic SDR shop, and content syndication is the core of it. It distributes whitepapers, guides and reports across a publisher network, collects contact details from people who download them, then qualifies those contacts to whichever level you are paying for.

The model is 100% pay-for-performance. You buy MQLs, HQLs, SQLs or BANT-qualified opportunities and pay per delivered lead, which removes the retainer risk but raises the entry bar. Typical engagement minimums sit near $25,000, so this is not a starting point for a small team.

What it does#

• Content syndication across a global B2B publisher network.
• Intent-based lead generation prioritised on real buyer signals.
• Account-based marketing against named target account lists.
• Multi-touch campaigns combining email, phone and programmatic.
• Qualification to BANT where the contract calls for it.

Up next, LeadGeneration.com.

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10. LeadGeneration.com#

LeadGeneration.com is a WebiMax company running omnichannel campaigns for small and mid-market clients. It carries strong review scores, 4.8 on G2 and 5 on Capterra as of September 2026, though the review base is far smaller than Belkins or Martal.

Two things stand out in the contract. Leads are exclusive rather than resold, and there is a lead replacement policy if a delivered lead does not meet the agreed criteria. Pricing is not published, and the company routes everyone through a free consultation first, though WebiMax lead generation work has been reported starting around $400 a month.

What it does#

• Custom campaign strategy built to your ideal customer profile.
• Multi-channel capture across search, social, email and landing pages.
• Exclusive leads, not shared across multiple buyers.
• Lead replacement policy for leads that miss the agreed criteria.
• CRM integrations with HubSpot, Salesforce, Pipedrive and Zoho.

Up next, Smith.ai.

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11. Smith.ai#

Smith.ai solves a different problem to everything else here. It does not prospect. It catches the leads you already generate and lose, through 24/7 virtual receptionists, web chat and outbound follow-up calls. Rated 4.9 on G2 from 73 reviews as of September 2026, the highest score in this guide.

Pricing runs per interaction rather than per month. Virtual receptionist tiers start at 30 calls a month with overage at $10.50 per call, dropping to $7.50 per call on the Pro tier after 150 calls. Outreach Campaigns, the outbound follow-up product, start at $600 a month for 50 contacts plus a $750 setup fee. Web chat is $5 per chat with a 120-chat minimum, so a $600 monthly floor.

What it does#

• 24/7 virtual receptionists answering calls in your company's name.
• Web chat with live agents and data-driven routing.
• Outreach Campaigns for outbound follow-up on existing leads.
• CRM integrations so every interaction lands in your pipeline.
• Appointment booking and payment collection as paid add-ons.

Up next, Skyline Social.

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12. Skyline Social#

Skyline Social is a done-for-you lead generation company covering both B2B and B2C, with a clear lean towards financial advisors, annuity, insurance and accounting practices. It also sells white-label leads to other agencies.

The service is a full funnel build rather than an SDR programme. Skyline handles the digital marketing campaigns, sales funnels, paid ad management, follow-up emails and video sales letters. Note that the previously published tiers, $3,500 for consulting and $7,500 done-for-you, are no longer listed. Pricing now runs through an application, so treat any figure you find elsewhere as historical.

What it does#

• Complete funnel setup, campaigns, landing pages and video sales letters.
• Paid ad management across the major platforms.
• Follow-up email sequences built into the funnel.
• Free training programme on generating predictable monthly appointments.
• White-label leads for agencies reselling to their own clients.

Up next, SmartReach.io.

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B2B data platforms, for teams running outbound in-house#

These five hand you the contacts and the sending tools instead of the meetings. You supply the people. The trade is obvious, more work for roughly a hundredth of the monthly cost, and every lesson your team learns stays with your team.

13. SmartReach.io#

Disclosure first, so you can weigh the rest accordingly. This is our product.

SmartReach.io is a cold email software that runs email, LinkedIn, calls and WhatsApp from a single sequence, and on its Sales Engagement plans it works as a full sales engagement platform for outbound teams. It is rated 4.6 on G2 from 60 reviews and 4.7 on Capterra as of September 2026.

The reason it belongs in a guide about lead generation companies is the B2B Lead Finder. SmartReach.io includes a database of 300M+ verified contacts across 50M+ companies, filterable by industry, company size, job title and location, so the list building an agency would charge you for happens inside the same subscription that sends the sequence. There is no separate data vendor to buy.

The billing unit is the other thing worth understanding against an agency retainer. SmartReach.io has no per-seat pricing. Plans scale by active prospects, and every plan above Basic includes unlimited users and unlimited sending email accounts. Add your ninth rep and the invoice does not move.

What it does#

• Four channels, one cadence, email, LinkedIn outreach, calls through the built-in dialer, and WhatsApp, with conditional branching on prospect behaviour.
• B2B Lead Finder, 300M+ verified contacts across 50M+ companies, built in rather than bought separately.
• Deliverability suite, warm-up, inbox and domain rotation, ESP matching, blacklist monitoring and unlimited free email validation.
• AI personalisation, per-prospect email writing from a brief, merge tags, spintax and conditional content.
• Two-way CRM sync with HubSpot, Salesforce, Pipedrive and Zoho, mapping fields in both directions.
• Shared inbox and agency mode, role-based access, sub-accounts, leaderboards and white-label reporting.

SmartReach.io pricing#

LinkedIn automation is $29 a month per LinkedIn account on top. So a seven-person team on Sales Engagement Plus with three reps running LinkedIn pays $99 plus three add-ons, $186 a month rather than $99. Any comparison that skips that math is doing you a disservice, including ours.

Up next, ZoomInfo.

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14. ZoomInfo#

ZoomInfo is the enterprise standard for B2B sales and marketing intelligence, rated 4.5 on G2 across 9,000+ reviews as of September 2026. Its data depth, direct dials and intent signals are genuinely hard to match, and the platform now sits under the GTM Workspace and GTM Studio branding after the 2026 product reshuffle.

Price is the whole conversation. Nothing is published. Entry sits near $15,000 a year for Professional, Copilot Advanced runs $22,000 to $30,000, and Copilot Enterprise clears $35,000. Vendr data across 1,500+ purchases puts the median contract at roughly $33,500 a year. Reviewers rate it highly and complain about cost in the same sentence.

What it does#

• Deep contact and company data, including direct dial numbers.
• Buyer intent signals showing which accounts are researching your category.
• GTM Studio, an automation canvas that fires plays off signals.
• Champion tracking and account fit scoring on the higher tiers.
• CRM and workflow integrations across the major platforms.

Up next, RocketReach.

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15. RocketReach#

RocketReach is a lead prospecting platform rather than a lead generation agency. You search for a person or a company and it returns verified emails and phone numbers, drawing on a large database and machine learning to fill gaps. Rated 4.4 on G2 as of September 2026.

Read the pricing carefully, because monthly billing costs roughly double the headline. Essentials is $49 a month month-to-month against $27 a month billed annually. Pro is $99 monthly or $69 annually, Ultimate $209 monthly or $142 annually. The "unlimited lookups" claim applies to annual plans only, and exports are capped at 1,200, 3,600 or 20,000 a year by tier. Multiple G2 reviewers flag friction cancelling auto-renewal.

What it does#

• Contact lookup for verified emails and phone numbers by person or company.
• Targeted list building against decision maker criteria.
• Browser extension for enriching profiles as you browse.
• API access on the higher tiers.
• CRM integrations for pushing found contacts into your pipeline.

Up next, BookYourData.

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16. BookYourData#

BookYourData is a pay-as-you-go B2B contact database with no subscription at all, serving 200,000+ active users. You buy credits, you spend them, and unspent credits never expire. That model alone makes it the right answer for anyone whose list building comes in bursts.

Coverage is 250M+ verified contacts across 200+ countries, with a stated 97% accuracy guarantee backed by an eight-step verification process and real-time email verification at export. Entry packs are $99 for 250 contacts, working out at $0.40 each, scaling down to $0.10 per contact on the 10,000-contact tier. Data is GDPR and CCPA compliant.

What it does#

• Pay-as-you-go credits that never expire, with no monthly commitment.
• 100+ search filters covering industry, job title, company size and location.
• 250M+ verified contacts across 200+ countries.
• Real-time email verification applied at the point of export.
• One-click export into CSV or your CRM.

Up next, Lusha.

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17. Lusha#

Lusha is one of the most widely used contact data tools in B2B, rated 4.3 on G2 from 1,600+ reviews as of September 2026. Most of that usage runs through the browser extension, which surfaces emails and phone numbers as you browse LinkedIn profiles and company sites.

The database covers 280M+ contacts and 30M+ company profiles. Pricing starts with a free tier at 40 credits a month for one user, then Starter from around $37 a user a month on annual billing, Pro from around $52, and Premium in the hundreds. The consistent criticism in reviews is the credit model, which runs out faster than most teams expect, plus weaker coverage outside the US, UK and Canada.

What it does#

• Browser extension for enriching LinkedIn profiles and company pages in place.
• Contact and company data, 280M+ contacts and 30M+ company profiles.
• Bulk list building with filters on the higher tiers.
• CRM enrichment to fill gaps in existing records.
• Free tier at 40 credits a month for evaluating before you buy.

How much do lead generation companies charge#

Agency retainers in 2026 run $4,000 to $15,000 a month for a managed programme, and setup fees of $5,000 are common before any pipeline exists. Data platforms cost $29 to $500 a month, or a few hundred dollars a year for pay-as-you-go credits. The gap is roughly two orders of magnitude, and it buys you people rather than software.

For context on what a lead should cost, blended B2B cost per lead in 2026 sits between $91 and $982 depending on the industry, with B2B SaaS averaging around $237, near $310 through paid channels and $164 through organic. LinkedIn Ads average around $408 per lead. Agency-sourced held meetings typically land between $250 and $400 each.

Four pricing models cover almost every contract you will be offered.

Some agencies combine models, most often a smaller retainer plus commission on closed-won deals. Martal Group works this way. It aligns incentives, but read the attribution clause carefully, because arguments about which deals the agency sourced are the most common source of friction in these contracts.

How to choose a lead generation company#

Start by deciding whether you are buying meetings or buying data, because that single answer removes most of this list. After that, seven questions do the real filtering.

Ask what a qualified lead means in the contract#

This is the question that matters most and gets asked least. Get the definition in writing. A lead defined as a form fill and a lead defined as a held meeting with a decision maker differ by an order of magnitude in value and price.

Check where the data comes from#

Ask the source and the refresh cadence. Contacts who opted in convert better, and stale records burn sender reputation before they burn budget. If the agency cannot tell you when the list was last verified, assume it has not been.

Match the channel to your buyer#

Cleverly is excellent if your buyers live on LinkedIn and worthless if they do not. Callbox earns its fee where phone still works. Match the agency's strongest channel to where your buyers actually respond, not to what is fashionable.

Look at contract length and exit terms#

Most agencies want six months. OutreachBloom offers month-to-month, Cleverly asks for three. Outbound takes eight to twelve weeks to produce a signal, so anything shorter than a quarter will not prove much, and anything longer than six months should come with performance triggers.

Confirm the reporting you will get#

Ask for a sample report before signing. It should track lead volume, lead quality, cost per lead and cost per meeting. If the agency reports activity metrics like emails sent instead of outcomes, you will not be able to judge the programme.

Test the CRM integration early#

Leads that need retyping do not get worked. Check the integration with your actual CRM, in a trial if possible, and confirm which fields sync in which direction.

Run the in-house arithmetic first#

Before committing to a retainer, price the alternative. A year of a $6,000 monthly agency retainer is $72,000. A year of SmartReach.io Sales Engagement Plus is $1,188 plus whoever runs it. If you already employ SDRs, the tooling comparison is the honest one.

Should you hire an agency or run outbound in-house#

Hire an agency when you need pipeline before you can hire reps, when you are entering a market you do not understand, or when you need a language or region you cannot staff. The tradeoffs are the same ones you weigh when building an SDR team in house. Those are real problems that money genuinely solves, and Belkins, Martal Group and Operatix are good at solving them.

Bring it in-house once you have a repeatable message and someone to own it, because the economics flip hard. A $6,000 monthly retainer typically buys 10 to 20 meetings. SmartReach.io Sales Engagement Plus is $99 a month for 50,000 active prospects with unlimited users, and the learning stays inside your team instead of leaving with the account manager.

The honest middle path is to do both in sequence. Use an agency to prove the market and learn what messaging works, then take the playbook in-house when the retainer stops paying for itself. Plenty of teams run an agency for two quarters and never renew, which is a success rather than a failure.

If you are weighing that switch, our breakdown of the cold email software lead gen agencies use covers what the agencies themselves run on.

Summing up the best lead generation companies#

There is no single best lead generation company, only the right shape for what you are missing. If you lack people, hire an agency. Belkins and Martal Group are the strongest all-round picks, Callbox if you need phone coverage across regions, Cleverly if your buyers live on LinkedIn and you want a published price.

If you have people and lack tooling, buy software. SmartReach.io is a cold email software that runs email, LinkedIn, calls and WhatsApp in one cadence with a 300M+ contact database built in, from $29 a month with no per-seat pricing. ZoomInfo is the answer when intent data justifies a five-figure annual spend, and BookYourData when your list building is occasional enough that a subscription would go unused.

Three things worth remembering whichever way you go. Outbound takes eight to twelve weeks to produce a reliable signal, so do not judge a programme in month one. Free tools exist but the good options cost money. And whichever route you pick, track cost per held meeting rather than cost per lead, because that is the number that tells you whether any of this is working.

Start your free trial of SmartReach.io and run the comparison against your own numbers.

Lead generation companies, frequently asked questions#