Finding the right lead generation partner can either accelerate your B2B growth or stall it completely. With dozens of agencies promising overnight success, it’s easy to feel overwhelmed, especially when you’re trying to reach high-value buyers in competitive U.S. markets.
The best lead generation companies in the US don’t just build lists or send generic emails. They combine smart targeting with proven outreach strategies and put people at the center of every campaign. If you’re breaking into a new market or expanding across regions, these firms share one rare quality: they get results that actually move the needle.
Below, you’ll find seven top-performing U.S.-based lead generation companies that are helping businesses close deals faster, scale smarter, and waste less time on the wrong prospects, starting with the one setting a new standard for the entire industry.
1. Martal Group
Headquarters: San Francisco, California and Oakville, Ontario (Onshore teams across the US, Canada, and Europe)
Year Founded: 2009
Company Size: 80+ employees
Industries Served:
SaaS, cybersecurity, AI/ML, IT services, manufacturing, and professional services, along with more than 50 other verticals that require targeted outreach and long-cycle sales strategies.
Services Offered:
B2B lead generation, appointment setting, cold calling, LinkedIn outreach, sales outsourcing, and inbound marketing support. Their approach connects the dots across channels and stages of the funnel.
What Sets Them Apart:
Martal Group brings together smart automation and seasoned sales talent to help B2B companies grow. Their outbound engine runs on a proprietary AI SDR that pulls from 15 years of sales expertise and 40 million emails. Instead of blasting the same message to everyone, the system builds campaigns around your target audiences and business goals.
Martal’s platform keeps an eye on more than 10,000 active buying signals while tapping into a contact base of over 220 million. The AI keeps learning while the campaign runs, so performance improves without missing a beat.
While the software handles the technical side, Martal’s human SDRs do what machines can’t. These reps come with three to five years of B2B experience and operate in the regions you’re targeting, whether that’s North America, Europe, or LATAM. They spend more time on strategy and sales conversations because the AI takes care of the repetitive parts.
You can choose from fractional, dedicated, or enterprise-level teams depending on your goals. If you’re looking for full sales cycle support, Martal can run the process from first contact through close. Or, if you already have a team in place, they’ll step in where you need them. Either way, the approach stays focused on people, progress, and real pipeline growth.
Best For:
Businesses that want to scale pipeline without adding headcount. Whether you’re a startup entering the U.S. market or an enterprise brand expanding across regions, Martal helps you move faster without sacrificing quality.
2. LevelUp Leads
Headquarters: San Francisco, California
Year Founded: 2020
Company Size: Around 20 employees
Industries Served:
SaaS, fintech, ecommerce, and B2B services. Most of their clients are in high-growth stages and need outbound support that sounds human, not scripted.
Services Offered:
Lead generation, outbound email, LinkedIn outreach, appointment setting, and strategic sales support. Their messaging feels like it came from a person, not a template.
What Sets Them Apart:
LevelUp Leads builds campaigns around natural conversation. The team takes time to understand how your audience talks and what they care about. Then they write messages that reflect that tone.
Their reps stay close to each campaign, making small shifts as replies come in. The focus is on staying relevant, not sending the same pitch to every contact. That approach often leads to stronger engagement, especially with decision-makers who get dozens of emails a day.
Who It Helps Most:
Startups, lean sales teams, and growing companies that want better meetings without growing headcount.
3. SalesRoads
Headquarters: Coral Springs, Florida
Year Founded: 2007
Company Size: 100+ employees
Industries Served:
Manufacturing, logistics, technology, and professional services. Most clients need a voice-first partner that can hold strategic conversations and uncover real sales potential.
Services Offered:
Cold calling, appointment setting, lead qualification, and outsourced SDR teams. SalesRoads focuses on high-quality phone outreach that feels consultative, not pushy.
What Sets Them Apart:
SalesRoads puts trained U.S.-based reps on every campaign. These SDRs are skilled in navigating tough conversations and getting past gatekeepers. Instead of relying on scripts, they use call guides tailored to your offer and audience.
Every program is built from the ground up, starting with a custom strategy session. Clients stay in the loop through detailed reporting and regular performance reviews. That hands-on structure makes it easier to pivot if something isn’t landing.
Who It Helps Most:
Mid-market and enterprise companies that still see the phone as a key sales channel. SalesRoads helps teams that need consistent outbound coverage without hiring in-house.
4. Hit Rate Solutions
Headquarters: Cebu City, Philippines (with U.S. client support)
Year Founded: 2011
Company Size: 50+ employees
Industries Served:
Real estate, insurance, healthcare, financial services, and tech. Many of their clients need help with cold calling, appointment setting, and customer retention.
Services Offered:
B2B cold calling, inbound support, lead generation, virtual assistance, and data entry. Hit Rate offers both full-service outreach and support-based programs.
What Sets Them Apart:
Hit Rate Solutions blends affordability with a hands-on approach. Their agents receive direct training tailored to each campaign, and client accounts are supported by a dedicated manager who monitors quality and performance.
Rather than pushing a one-size-fits-all model, the team works closely with clients to adapt their strategy and script over time. The result is a more natural, productive interaction with prospects.
Who It Helps Most:
Small to mid-sized businesses that need reliable outbound coverage at a cost-effective rate.
5. GenSales
Headquarters: Denver, Colorado
Year Founded: 2002
Company Size: 50+ employees
Industries Served:
Manufacturing, logistics, energy, construction, and B2B services where longer sales cycles and personal conversations play a central role.
Services Offered:
Cold calling, appointment setting, lead qualification, and consultative sales outreach. Their U.S.-based team focuses on having real-time, persuasive conversations with decision-makers.
What Sets Them Apart:
GenSales builds its strategy around one core belief: phone calls still work. Their team develops tailored scripts but encourages reps to speak naturally, listen closely, and respond in the moment..
Campaigns adapt based on what callers hear and learn. As reps gather feedback from conversations, GenSales adjusts its messaging to stay relevant and improve performance over time.
Who It Helps Most:
Companies offering services or solutions that need a live conversation to convert. GenSales works best for teams who see value in voice-first outreach.
6. LeadGenius
Headquarters: Berkeley, California
Year Founded: 2011
Company Size: 100+ employees
Industries Served:
Tech, SaaS, higher education, public sector, and other sectors where precise targeting and account-level customization matter.
Services Offered:
Custom lead generation, multilingual outreach, account-based marketing, contact enrichment, and campaign strategy built around specific roles, regions, and buyer stages.
What Sets Them Apart:
LeadGenius helps teams connect with buyers that most platforms miss. Their approach blends global data sourcing with manual verification from trained researchers. This way, every lead fits your ICP, not just by title or industry, but by buying behavior and market readiness.
The process begins with a thorough examination of your GTM strategy. From there, LeadGenius builds contact lists designed to match your goals and fills in the gaps with data other providers can’t access. Outreach plans are shaped by geography, language, role, and deal size, so your messaging hits closer to home.
Who It Helps Most:
Companies moving into new markets or selling to hard-to-define audiences. LeadGenius fits best when precision, accuracy, and regional nuance are top priorities.
7. Smith.ai
Headquarters: Palo Alto, California
Year Founded: 2015
Company Size: 250+ employees
Industries Served:
Legal, finance, SaaS, IT consulting, and service-based firms that need fast, thoughtful lead response.
Services Offered:
Live chat, call answering, outbound follow-up, appointment booking, CRM updates, and lead qualification.
What Sets Them Apart:
Smith.ai responds fast, often within seconds of a lead filling out a form or calling in. The reps don’t just answer questions. They guide the conversation, qualify the lead, and book meetings.
Their AI doesn’t run the show. It works quietly in the background, helping the human reps stay sharp, organized, and consistent. That balance helps your leads feel heard instead of handled.
Who It Helps Most:
Teams that get plenty of inbound interest but struggle to follow up fast. Smith.ai fills that gap, plugging into your CRM and taking over the early touches so your sales team can focus on closing.
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Conclusion
Finding a lead generation partner is never just about filling your calendar. It’s about aligning with a team that understands your goals, speaks your prospects’ language, and keeps momentum moving from the first touch to the final close.
Each company on this list brings something different to the table. Some lean into smart automation. Others focus on human connection. The strongest partners know how to blend both. That balance is where real pipeline growth happens.
As you look ahead to your next sales push, use this list as a guide. Whether you’re breaking into the U.S. market or expanding across regions, the right team makes the difference between outreach that fizzles and outreach that converts.
