Finding good leads as a small business owner is hard, and it gets harder as more competitors chase the same customers. You don’t have enterprise budgets or massive sales teams, but you still need a steady stream of potential customers who actually want what you’re selling.
The right lead generation service can level the playing field, delivering qualified prospects to your inbox while you focus on running your business. Below are eight services worth a look, from contact databases to full appointment-setting teams, plus a note at the end on where Clicks Geek fits. We publish this guide, so we left ourselves out of the numbered list.
How This List Is Ordered
The order is not a score. It runs from the most hands-on option to the most hands-off:
- Contact data you work yourself. UpLead, Apollo.io and LeadGenius give you prospect data, and your team does the outreach.
- Done-for-you outreach and appointment setting. Callbox, CIENCE, Belkins, Martal Group and Pearl Lemon Leads run the calls, emails or LinkedIn messages and book meetings for you.
Each entry covers how the service works, who it suits and how it charges. We left out price figures and database sizes because they change often, so check current details with each provider.
1. UpLead
Best for: B2B companies building targeted prospect lists with verified contact data
UpLead is a B2B contact database platform offering business contacts that are verified when you download them.
Where This Tool Shines
UpLead takes the guesswork out of B2B prospecting with real-time email verification. Each contact is checked when you download it, so you spend less time on bounced emails and outdated details.
The platform’s filtering capabilities let you get incredibly specific with your targeting. For example, you can build a list of marketing directors at SaaS companies with 50 to 200 employees that use Salesforce in minutes, not days.
Key Features
Real-Time Verification: Contacts are checked when you download them, so fewer emails bounce.
Broad Coverage: Contacts across many industries and business sizes worldwide.
Advanced Filtering: Search by technographics, firmographics, job titles, company size, revenue, and more.
CRM Integrations: Export contacts to Salesforce, HubSpot, and other popular CRM platforms.
Intent Data: Identify prospects actively researching solutions in your category.
Best For
B2B companies with in-house sales teams who need accurate contact data for outbound campaigns. Perfect for businesses targeting specific industries or decision-makers with precise criteria.
Pricing
Credit-based subscription. Each contact download uses one credit, which keeps costs predictable for small teams.
2. Apollo.io
Best for: Small teams wanting database access plus built-in outreach automation
Apollo.io is an all-in-one sales intelligence and engagement platform combining a massive B2B database with email sequencing and outreach automation.
Where This Tool Shines
Apollo stands out by giving you both the data and the tools to act on it in one platform. From the same platform, you can run full outreach campaigns with built-in email sequences, tracking, and analytics.
The no-cost tier makes it accessible for bootstrapped startups, while the Chrome extension lets you prospect directly from LinkedIn without switching between multiple tools.
Key Features
Large B2B Database: Wide global coverage of companies and contacts.
Built-in Email Automation: Create multi-step email sequences without needing separate outreach software.
LinkedIn Chrome Extension: Prospect and capture contact information directly from LinkedIn profiles.
AI-Powered Lead Scoring: Automatically prioritize prospects based on engagement and fit.
No-Cost Plan: Access core features and limited contacts without paying anything upfront.
Best For
Startups and small sales teams who want an affordable all-in-one solution. Great if you’re doing your own outbound prospecting and need both data and execution tools in one place.
Pricing
A no-cost plan with limited features, then paid plans priced per user per month.
3. LeadGenius
Best for: Companies targeting niche markets requiring custom data collection
LeadGenius is a data and intelligence platform combining human research with machine learning to deliver custom B2B data and account insights for niche targeting.
Where This Tool Shines
LeadGenius excels when off-the-shelf databases can’t deliver what you need. Their human researchers dig into specific markets, industries, or buyer personas that standard data providers don’t cover well.
The combination of human intelligence and machine learning means they can identify patterns and signals that pure automation misses. If you’re targeting a specialized market where contact data is hard to find, LeadGenius fills that gap.
Key Features
Custom Data Collection: Tailored research for niche markets and hard-to-reach buyer segments.
Human-Verified Information: Researchers validate contact details and company information manually.
Account-Based Marketing: Support for ABM strategies with detailed account intelligence and insights.
Intent Signals: Identifies buying triggers and behavioral signals indicating purchase readiness.
API Access: Integrate custom data directly into your CRM or marketing automation platform.
Best For
Companies in specialized industries or targeting very specific buyer personas where standard databases lack coverage. Ideal for account-based marketing programs requiring deep account intelligence.
Pricing
Custom enterprise pricing based on data requirements and volume. Positioned for companies with specific data needs that justify the investment.
4. Callbox
Best for: Companies wanting full-service multi-channel outreach and appointment setting
Callbox is a full-service B2B lead generation company offering multi-channel outreach including phone, email, social, and web to deliver qualified appointments.
Where This Tool Shines
Callbox takes the entire lead generation burden off your shoulders with a dedicated account team that handles everything from research to appointment setting. Their outreach goes beyond email to include phone calls, LinkedIn messages and repeated follow-up.
Think of it as outsourcing your entire top-of-funnel sales process. You get scheduled meetings with qualified prospects without managing the day-to-day grind of outreach campaigns.
Key Features
Multi-Channel Outreach: Combines phone calls, email, social media, and website engagement for maximum reach.
Dedicated Account Team: Assigned specialists who manage your campaigns and understand your business.
Appointment Setting: Qualifies the leads they find and books meetings on your calendar.
Industry Targeting: Specialized expertise in specific verticals like IT, healthcare, finance, and manufacturing.
CRM Integration: Syncs with your existing sales tools so your pipeline stays in one place.
Best For
B2B companies with higher-ticket offerings who need qualified appointments, not just contact lists. Ideal if you have the sales capacity to handle meetings but lack the resources for consistent outbound prospecting.
Pricing
Custom pricing based on the campaign. It makes the most sense when a single new customer is worth more than a month of the service.
5. CIENCE
Best for: Businesses needing custom prospect research combined with outbound execution
CIENCE is an outbound lead generation service combining human-powered research with AI technology to build targeted prospect lists and execute personalized outreach campaigns.
Where This Tool Shines
CIENCE blends human intelligence with AI-powered tools, meaning you get the accuracy of manual research with the scale of automation. Their researchers actually investigate your ideal customer profile and build custom lists for your business instead of pulling generic records from a database.
The hybrid approach delivers better data quality than pure automation while remaining more scalable than purely manual research. You’re getting prospects that actually match your criteria, with outreach messaging tailored to their specific pain points.
Key Features
Human + AI Research: Researchers verify and enrich data using AI tools for maximum accuracy and relevance.
Custom List Building: Tailored prospect lists based on your specific ideal customer profile, not off-the-shelf databases.
Multi-Channel Execution: Outreach campaigns across email, phone, and social channels.
SDR Services: Both inbound and outbound sales development representatives available.
Campaign Analytics: Detailed reporting and ongoing optimization based on performance data.
Best For
Companies targeting niche markets or highly specific buyer personas where generic databases fall short. Works well for businesses with complex sales cycles requiring personalized outreach.
Pricing
Custom pricing. Positioned for companies with established sales processes ready to scale outbound efforts.
6. Belkins
Best for: B2B appointment setting with emphasis on email deliverability
Belkins is a B2B appointment setting agency focused on email deliverability and personalized outreach to generate qualified sales meetings.
Where This Tool Shines
Belkins obsesses over email deliverability in a way most agencies don’t. They understand that the best copy in the world doesn’t matter if your emails land in spam folders, so they’ve built their entire process around inbox placement.
Their copywriters craft personalized messages that actually sound human, not templated. Combined with their technical expertise in email infrastructure, you get campaigns that reach decision-makers and generate responses.
Key Features
Email Deliverability Focus: Technical setup and monitoring to ensure your emails reach primary inboxes, not spam.
Personalized Copywriting: Custom messaging for each campaign, not generic templates blasted to thousands.
LinkedIn Integration: Combines email outreach with LinkedIn connection requests and messaging.
Dedicated Teams: Separate research and outreach specialists assigned to your account.
Retainer Packages: Plans built around a yearly appointment target and the outreach channels you need.
Best For
B2B companies struggling with email response rates or worried about damaging their domain reputation. Great for businesses that have tried outbound email and failed due to deliverability issues.
Pricing
Retainer packages, priced on the channels included and the number of appointments you aim for.
7. Martal Group
Best for: Tech and SaaS companies needing outsourced SDR teams
Martal Group is a sales-as-a-service company specializing in lead generation for tech and SaaS companies, providing outsourced SDR teams to fill sales pipelines.
Where This Tool Shines
Martal Group understands the tech and SaaS sales cycle intimately. Their SDRs speak the language of your buyers and understand complex products without requiring weeks of training.
The outsourced SDR model gives you the benefits of a dedicated sales development team without the overhead of hiring, training, and managing full-time employees. Its sales reps are based in North America, the EU and Latin America.
Key Features
Tech and SaaS Specialization: Deep expertise in software sales cycles and technical product positioning.
Outsourced SDR Teams: Dedicated sales development representatives working exclusively on your pipeline.
Regional Sales Reps: Reps based in North America, the EU and Latin America.
Flexible Engagement Models: Options from part-time support to full-scale SDR teams.
Qualified Appointments: Focus on setting meetings with decision-makers, not just generating contact lists.
Best For
Tech startups and SaaS companies that need sales development capacity but aren’t ready to build an internal SDR team. Works well for businesses that already know who buys from them and want to scale outbound.
Pricing
Custom pricing, quoted on the size of the team and the scope of the campaign.
8. Pearl Lemon Leads
Best for: Professional services firms using LinkedIn for lead generation
Pearl Lemon Leads is a lead generation agency with strong expertise in LinkedIn outreach and multi-channel prospecting for professional services and B2B companies.
Where This Tool Shines
Pearl Lemon Leads has mastered LinkedIn as a lead generation channel, understanding the nuances of professional networking that separate effective outreach from spam. They know how to build connections that actually lead to conversations.
Their multi-channel approach combines LinkedIn with cold calling and email, creating multiple touchpoints that increase response rates. The flexible packages make them accessible to smaller businesses that can’t commit to enterprise-level contracts.
Key Features
LinkedIn Expertise: Specialized strategies for connection requests, messaging, and relationship building on LinkedIn.
Multi-Channel Prospecting: Integrates cold calling, email outreach, and social selling for comprehensive coverage.
SEO-Driven Inbound: Combines outbound lead generation with inbound strategies to create multiple lead sources.
Appointment Setting: Qualifies prospects and schedules meetings directly on your calendar.
Flexible Packages: Scalable options designed for small business budgets and growth stages.
Best For
Professional services firms, consultants, and B2B companies where LinkedIn is a primary channel for reaching decision-makers. Ideal for businesses targeting executives and professionals active on the platform.
Pricing
Monthly packages for each service, listed on its site, plus custom quotes.
Specialist options outside the main list
A few narrower services come up in the same searches. They are worth knowing if one of these needs matches yours.
- LinkedIn-led outreach. Cleverly is best known for LinkedIn prospecting from your own profile. It builds the target list, writes the messages and handles replies until a prospect agrees to talk. It also runs cold email and cold calling, and suits consultants and small B2B firms that sell through LinkedIn.
- Researched contact lists. Leadium builds custom prospect lists with people checking the data, and can run outbound campaigns on top of them. It fits companies with a narrow target market that standard databases cover poorly.
- Selling into Europe. Cognism is a B2B data platform known for phone-verified mobile numbers and a focus on GDPR compliance, which matters if your prospects are in the UK or EU.
Which type of service fits how you sell
Most of the services above fall into one of three groups. Knowing which one matches how you sell narrows the list quickly.
- Outbound B2B prospecting. If you sell to other businesses and have someone to do outreach, a verified contact database such as UpLead, or Apollo.io if you also want built-in email sequences, gives you the contacts and a way to reach them. If you would rather hand off the outreach, appointment-setting firms such as Callbox, CIENCE and Belkins run the calls and emails and book meetings for you.
- Local service businesses. If customers find you by searching for a service in their area, you can hire a managed ads partner to run Google Ads and Local Services Ads, or buy leads from a pay-per-lead marketplace such as Angi. Marketplace leads are often shared with other pros, so quick follow-up matters.
- Converting traffic you already have. If people visit your site but few get in touch, the gap may be on your side. A focused landing page, an online scheduling tool such as Calendly and a CRM to track follow-up can win more customers from the same traffic.
Whichever route you pick, speed to lead counts. If calls often go unanswered after hours or during busy jobs, a virtual receptionist and intake service such as Smith.ai can answer, qualify callers and book appointments for you.
Making the Right Choice
The best lead generation service for your small business depends on three critical factors: your target audience, your internal resources, and your budget reality.
If you’re a local business looking for customers who are searching for your service right now, Google Ads or Local Services Ads put you in front of those searchers. From there, your job is to make it easy for them to get in touch.
For B2B companies with in-house sales teams, database platforms like UpLead or Apollo.io give you the contact data and tools to run your own outreach. You maintain control over messaging and timing while accessing verified prospect information.
When you need someone to handle the entire outbound process, full-service agencies like Callbox, CIENCE, or Belkins take the burden off your plate. You get scheduled appointments without managing daily prospecting activities. The higher price point makes sense when a single customer justifies the monthly investment.
Budget matters, but don’t decide on price alone. A low-cost database that produces no customers costs more than a pricier service that books qualified meetings. Work out your customer acquisition cost and customer lifetime value, then use those two numbers to compare options.
Start with one channel, track what each new customer costs, and add more once it works.
Prefer to Hire It Out? Where Clicks Geek Fits
Disclosure: this guide is published by Clicks Geek. We don’t do B2B outbound or appointment setting, which is why we’re not on the list above. Our work is paid lead generation for local service businesses, mainly Google Ads for companies whose customers search for a service in their area. We’re a Google Premier Partner and work month-to-month, with no lock-in contracts. You can read more about our lead generation service for local businesses.
If you sell to other businesses, the firms above are the better fit. If you run a local service business, pricing depends on your market and goals, so contact us for a quote. See what it would cost in your market.
