7 B2B Cold Calling Services That Actually Deliver Results

Cold calling isn’t dead—it’s just evolved. In an era of automated messages and overloaded inboxes, a well-timed, human conversation can still be the fastest path to a qualified sales opportunity. But successful B2B cold calling today requires more than a headset and a script. It takes strategic targeting, strong messaging, and a team that knows how to engage decision-makers effectively.

The following business lead generation companies stand out in the crowded cold calling space. Whether you’re looking to scale outbound efforts or supplement your in-house team, these providers can help you connect with the right leads, at the right time.

1. Martal Group

Martal Group takes a modern, signal-driven approach to cold calling that boosts results and minimizes wasted effort. Rather than cold dialing blindly, Martal uses real-time intent signals and behavior-based insights to build highly targeted call lists. Even better, their reps warm up prospects with personalized cold emails before picking up the phone—dramatically improving conversion rates.

Martal’s outsourced cold calling service is fully integrated with multichannel outreach efforts, including LinkedIn and email, making it a seamless part of a broader lead generation strategy. The company specializes in complex B2B sales for industries like SaaS, cybersecurity, AI/ML, and enterprise IT.

• Cold Calling Strengths: Signal-driven targeting, warm calling, experienced global SDRs
• Additional Services: Multichannel outbound campaigns, inbound support, sales outsourcing
• Best For: B2B companies and enterprise sales teams seeking intelligent, scalable outreach

2. SalesRoads

SalesRoads has been refining the art of cold calling for over 17 years. With U.S.-based SDRs and industry-specific calling scripts, they’re known for delivering quality over quantity. Their reps are trained to reach decision-makers across a variety of sectors, from manufacturing to logistics to SaaS.

Clients benefit from custom-built call campaigns that prioritize strategic conversations and sales-ready outcomes.

• Cold Calling Strengths: U.S.-based reps, tailored scripts, track record of success
• Additional Services: Appointment setting, sales outsourcing
• Best For: Companies wanting a trusted, voice-first partner to drive top-of-funnel growth

3. Blue Valley Telemarketing

Blue Valley is a lesser-known U.S. firm that focuses entirely on B2B outbound calling services. They emphasize professional, native-English reps who can carry on intelligent business conversations—not just read scripts.

With decades of experience serving mid-sized and enterprise clients, Blue Valley is often chosen by companies looking for a straightforward, voice-led outreach partner.

• Cold Calling Strengths: 100% phone-based, non-scripted conversations
• Additional Services: Lead qualification, data verification
• Best For: Companies wanting a no-frills calling partner with a human-first approach

4. SalesPro Leads

SalesPro Leads offers customized B2B cold calling campaigns with a focus on technology and financial services sectors. Their model emphasizes quality data sourcing, strategic outreach timing, and ongoing performance tuning.

The firm is known for its agile approach—launching campaigns quickly without compromising on message personalization or lead accuracy.

• Cold Calling Strengths: Custom campaigns, performance optimization, tech industry focus
• Additional Services: Lead nurturing, data enrichment, CRM support
• Best For: Mid-market tech companies and financial services firms

5. Extended Presence

Extended Presence is a boutique B2B cold calling agency that builds long-term outbound sales pipelines for companies with complex offerings. They offer both U.S.-based and nearshore SDRs and focus heavily on aligning messaging with buyer personas.

This agency is particularly strong in verticals like software, telecom, and energy.

• Cold Calling Strengths: Persona-driven messaging, full-cycle sales outreach
• Additional Services: Sales enablement, lead scoring, pipeline development
• Best For: Companies with longer sales cycles or technical solutions

6. Apex Business Communications

Apex provides personalized cold calling campaigns to generate qualified B2B appointments. Based in Canada, they take a hands-on approach to script development and caller training, offering clients transparency and real-time insights throughout each campaign.

Their team is especially well-versed in industries like professional services, logistics, and clean energy.

• Cold Calling Strengths: Transparent reporting, customized messaging
• Additional Services: Lead generation, market research
• Best For: Small to mid-sized businesses needing a flexible, communicative partner

7. RampedUp

RampedUp focuses on intelligence-driven outreach and lead development. While their broader platform includes data cleansing and CRM enrichment tools, their outbound call campaigns are designed to complement internal sales teams.

They specialize in working with enterprise clients looking to augment their outreach with accurate data and precise messaging.

• Cold Calling Strengths: Data-backed prospecting, integrated CRM support
• Additional Services: Lead database enrichment, persona mapping
• Best For: Enterprises seeking smarter, data-powered cold calling support

Final Thoughts

Cold calling is far from obsolete—it’s simply become more targeted, more strategic, and more effective when powered by the right tools and talent. From Martal Group’s signal-based warm-call strategies to the human-centered approach of Blue Valley and Apex, these companies show that B2B cold calling still has a vital place in modern sales.

Choosing the right partner depends on your industry, deal size, and internal capacity. But one thing is clear: the best cold calling agencies don’t just dial numbers—they open doors.