For any business to be successful, having high-quality leads is absolutely critical. According to a report, modern marketers consider ‘lead generation’ as the key to their work. But, for some reason, almost 60% of marketers claim that their CAC (Customer Acquisition Cost) has increased drastically over the past few years.
Lead gen, in this case acquiring customers, is no walk in the park. There are plenty of companies that would profit more from having leads generated externally. For those deciding to keep operations in-house, numerous resources are available for use; however, the desired goals may not be achieved.
In this article, we will list the top 15 best B2B lead generation companies that specialize in SEO, PPC, email marketing, and outreach to help businesses attract and convert high-quality qualified leads efficiently.
What are B2B lead generation services companies?
A B2B lead generation service specializes in and provides assistance to businesses looking for possible customers through implementing various techniques of SEO, PPC, content publishing, and email marketing strategies.
The primary function of each of these companies is to gain high-quality leads and convert them, ultimately saving the business time and increasing productivity. As a result, business has the ability to achieve an uninterrupted supply of potential customers while focusing on sales pipeline and growth.
Important B2B Lead Generation Services That You Should Know About
B2B lead generation services seek to employ a mix of digital targeting and direct outreach to maximize conversions. Below are the core products or services that help businesses to attract, nurture, and convert the leads in a proper manner:
- Search Engine Optimization (SEO) & Content Marketing: Increase the organic traffic and leads generated by optimizing content, blogs, and landing pages, and the business gets more visibility.
- Pay-Per-Click (PPC) Advertising: Capture relevant leads by running targeted ads. This will ensure speedy and easily measurable results.
- Email Marketing: Engage potential customers with personalized email templates. Keep them engaged with the right offers and insights on the right topics that interest them.
- Social Media Marketing: Convert leads through paid ads on LinkedIn and Facebook and use for better outreach to leads through data-driven strategies.
- Cold Calling & Outreach: Increase conversions by speaking directly to potential clients, enabling the cultivation of trust that fosters long-lasting business relationships.
- Lead Nurturing & Integration of CRM: Ensure no opportunity is missed and sales potential is maximized through automated follow up and efficient lead management.
Top 15 Companies and Agencies for B2B Lead Generation Services
Finding the right software or agency service for your inbound and outbound marketing can be quite a task. Below is our selection of the most recommended software, agencies, and companies that specialize in B2B lead generation.
1. SwiftPropel
SwiftPropel is a top-rated B2B lead generation and digital marketing company renowned for propelling high-quality leads and revenue growth for businesses. With a client base covering various industries, the company specializes in data-driven strategies customized to optimize conversions.

SwiftPropel utilizes a combination of inbound and outbound marketing strategies to help companies reach their target customers efficiently. It balances state-of-the-art automation with human touch, maximizing campaigns for the highest ROI.
Main Features
- Human-personalized AI-driven lead generation
- Multi-channel campaign outreach
- Brand development through SEO, content marketing, and PPC
- Campaign optimization and data-driven insights
- Lead nurturing and conversion tracking from start to finish
2. Belkins
Belkins is one of the top-rated lead generation companies that will take care of all your top-of-the-funnel needs. This lead generation agency provides an extensive range of services, such as lead research, outreach creation, and email deliverability optimization.
Belkins is widely known for their extensive appointment scheduling services that they offer. In addition to helping clients finalize appointments, they also prepare sales reps with crucial information needed to win during every meeting.
Main features
- Setting appointments
- Outreach through cold emailing
- Consulting for CRM system
- Marketing through LinkedIn
- Enabling sales
3. Martal Group
Martal Group is a good fit for companies operating in the software and technology sectors. For companies wishing to outsource a big part of the b2b sales funnel, Martal is great because the agency can give you SDRs and Sales Executive leads.
Moreover, they develop custom lead generation process for clients by assigning a dedicated management team to the client’s problems, goals, and preferences.
Main features
- Intent data
- B2B appointment setting
- Lead lists
- Email campaigns
- Lead generation
4. Cognism
Cognism is a sales intelligence platform that provides a B2B database compliant with GDPR and CCPA. Its web application and browser extension furnish company and contact information, such as mobile phone numbers and email addresses, for executives within an organization.
One of the unique features of this platform for generating leads is Diamond Data®, which guarantees the dialing of the cell phone number by verifying it with a live phone call. It integrates with LinkedIn, Sales Navigator, corporate databases, Outreach, HubSpot, and Salesforce.
Main features
- Phone-verified Diamond Data®
- Bombora’s intent data
- Mobile numbers scrubbed clean of Do-Not-Call lists
- Popular CRMs and sales tools compatibility
- Coverage in EMEA, NAM, and APAC
- Data compliant with GDPR and CCPA
5. ZoomInfo
ZoomInfo provides B2B contact information and company data to aid sales, digital marketing, and recruiting divisions in an organization.
They provide a huge volume of data that enables specific searches for prospective business clients by a particular industry, geographic area, or type of employment. This makes it easier to engage identified leads, while intent alerts tell you who is buying at the moment. ZoomInfo offers a Chrome Extension and a web app. Their features are bundled in what they call Operating Systems (OS).
Main features
- Searching and filtering using sophisticated techniques
- Insights into contacts and companies
- Intent intel data with real-time notifications
- Tracking visitors to your website
- Integration with CRM systems is effortless
6. Apollo.io
Apollo makes marketing and sales easier by merging all the sales services in one platform. With Apollo, your marketing and sales teams have direct access to verified contacts and are able to directly utilize them for marketing campaigns.
The platform integrates analytical tools, email automation, and a database managed system to help optimize sales, revenue, and qualified lead generation.
Main features
- Innovative technology
- AI Integrated analytics, sales engagement tools
- API access
- Automated workflows
- Data enrichment
7. CIENCE
You know a lead generation agency deserves your attention when its clientele features brands like Uber, Microsoft, Google, Yamaha, and more. CIENCE Technologies not only does lead generation, but also robust inbound and outbound SDR services.
The company has recently moved to AI-powered outbound marketing for greater scalability with AI tailored personalization. The choice is yours if you want to work with an AI + human model or go with pure human prospectors.
Main features
- Customized cold outreach
- ABM or account-based marketing tactics
- Research and qualification of prospects done with a focus on data
- Outreach campaigns done through multiple channels
- Analytics and reporting of outcomes and return on investment
8. Salespanel
Salespanel is an all-in-one software for lead generation, visitor tracking and marketing activities. From lead generation to behavior and firmographic data analysis, the software automates varies activities. It implements automation allowing marketers to pass on important information to relevant sales teams seamlessly.
Salespanel does not fall under the category of beta data scraper because it does not pull cold leads from a database.
Conventional web forms might convert 1 out of 20 of your visitors into a lead, which in reality is losing money on marketing. With a crystal clear match rate and accuracy, Salespanel can detect a staggering 67 percent of your B2B visitors, effectively skyrocketing your MQLs. This feature, paired with the ability to score and prioritize highly intent leads through their account information, allows Salespanel to assist sales team in rinse repeating data and make more out of sales.
Main features
- Real time alerts and notifications
- Mapping of the journey of a visitor
- Lead scoring and qualification
- Personalization of a website depending on the actions of a visitor
- Connection to popular customer relationship management systems
9. LeadGeneration.com
LeadGeneration.com has everything that you, as a business owner, might need from a lead generation company. Are you in need of a management team who would personally work with you to create a multi-channel lead generation strategy tailored to your needs?
Lead generation campaigns would be a lot easier if there was an agency that provided integration services with standard CRM systems such as HubSpot and Salesforce.
If the above questions strike a chord with you, then we’re sure that LeadGeneration.com would meet your requirements perfectly.
Main features
- Diverse techniques for outbound and inbound lead generation
- Pay per click, content marketing, and SEO advertising to boost relevant traffic
- Multichannel integrated campaign optimization
- Unique website traffic sources
10. Callbox
Callbox is a B2B, global lead generation firm that integrates multiple outreach channels to form a comprehensive lead generation strategy. These include telemarketing, email marketing services and social media.
With their in-house B2B database, lead nurturing tools, and pipeline management tools, they help every campaign become successful.
Main features
- Account-based marketing approach
- Database management
- Appointment setting
- Email campaigns
- Lead nurturing
11. LeadGenius
LeadGenius incorporates AI and human researchers to enable marketing agency and sales teams to perform their outbound sales functions with great ease.
They ensure email deliverability as well as enhance the accuracy of contact details by verifying them. LeadGenius enables effortless transfer and management of leads as it integrates with major CRM systems.
Main features
- Engagement monitoring
- Personalized datasets
- Creation & management services for email campaigns
12. Salesloft
Salesloft is an advanced sales engagement platform aimed at assisting revenue-generating teams in moving deals through the funnel rapidly. They support lead generation through email tracking, cadence management, and workflow analytics, hence enhancing the level of customer interaction.
With Salesloft, companies can optimize their sales approach, track performance metrics, and improve customer engagement by setting leads lower down the sales funnel.
Main features
- Report generation & analytics
- Sales cadence and workflow automation
- Call and meeting scheduling with personalized email template tracking tools
13. Memory Blue (formerly Operatix)
Memory Blue is an outsourcing SDR agency targeting B2B SaaS vendors worldwide. It creates marketing strategies and sales tactics for business purposes within accounts.
By partnering with Memory Blue, you will access their professional sales personnel who can create lead opportunities and accelerate revenue generation. In addition, with a multilingual workforce, Memory Blue can conduct campaigns in North America, Europe, Latin America, and Asia Pacific regions.
Main features
- Account-based, multi-touch approach
- Account identification
- Focus on C-Level outbound activities with tailored messaging for each client
- Lead qualification
14. Snov.io
Snov.io is a sales enablement tool and an email outreach tool. It has features that allow for building email lists, lead generation, email verification, and email warming for an easy sales conversion.
Snov.io has a Chrome extension that helps you retrieve the email addresses of decision-makers from company websites, LinkedIn accounts, and other relevant sources.
Key features
- Finder and verifier of emails
- Warm-up of emails
- Automated outreach email campaigns
- Checking technology
- HubSpot, Salesforce, and other technologies sponsorships
15. Lusha
Lusha is a company that offers services related to business-to-business data. You can get the contact information of your prospective clients through their Chrome Extension with one click.
Lusha assists in finding leads based on firmographic data, the presence of intent signals, and seniority within a company.
Main features
- Extensions for Chrome
- Data about intent
- Enrichment of data
- Building of the lists
- Analytical tracking of data usage
Conclusion
Your ideal prospecting businesses function as a substitute for your internal sales and marketing department to help you optimize profit margins. Pick an agency that claims to help businesses like yours with lead generation campaigns and you will not get it wrong.
What if you are not quite comfortable handing over all of your lead generation responsibilities to an outside firm? In this scenario, lead generation resources prove to be beneficial as they allocate your resources to the most promising prospects. So, head over to these companies and explore their top lead generation resources to enhance your strategy while maintaining control over key processes.

Vijay Sood is a seasoned digital marketer with a passion for driving online growth and innovation. With a robust background in developing and executing comprehensive digital strategies, Vijay excels in leveraging SEO, content marketing, and social media to boost brand visibility and engagement. His expertise lies in transforming data-driven insights into actionable marketing campaigns, helping businesses achieve their digital objectives.