7 Best Outsourced SDR Companies [2025 Reviews]

Outsourced SDR services have become the engine behind growth for many B2B tech companies. As markets tighten, hiring experienced in-house SDRs becomes more expensive and unpredictable. As a result, businesses are rethinking how they build their pipeline.

Instead of managing slow internal recruitment cycles, costly turnover, and inconsistent output, more companies are now partnering with outsourced SDR providers. Why? Because their ready-made teams offer proven processes and market-tested go-to-market expertise.

When done right, outsourcing SDRs can transform outbound prospecting from a chaotic guessing game into a predictable, data-driven revenue engine.

In this guide, we highlight 7 outsourced SDR agencies that can help you achieve revenue growth.

Why Outsourcing SDRs Has Become Vital for B2B Growth

The SDR function has become increasingly challenging to scale internally. The reasons include talent scarcity, an inconsistent pipeline, high turnover, inefficient ramp-up, and weak ROI visibility. 

As a result, many companies have been pushed to consider an outsourced SDR partner. The reason: They offer faster ramp-up, better data, and multilingual market coverage. When done right, outsourcing to an SDR partner helps your business regain sales predictability and control over business growth.

What to Look for in an Outsourced SDR Company

Before we compare our shortlisted vendors, we’d like to help you evaluate the best fit for your brand. Ultimately, you want to work with someone who’ll go beyond booking meetings. They should refine your entire outbound system.

Here are some key factors to consider when shortlisting vendors.

• Strategic coverage: The provider should collaborate on ICP definition, messaging, and channel selection before execution.
  
• Local & linguistic coverage: Beyond language coverage, look for teams that understand the cultural norms and values of your target geography.
  
• Specialization: Which verticals and industries do you serve? For example, B2B or B2B. Or, your business may offer cybersecurity services. Select a partner that’s highly specialized in industries and verticals that you target. It’s a winning formula for success.
  
• Proven process: BANT qualification, CRM integration, and multi-channel outbound (cold calls, LinkedIn, email) should be standard.
• ‍Transparency and ROI tracking: Ask candidates how they report meeting-to-revenue performance and model ROI.

At Profibl, we offer pan-European reach, bilingual SDRs (English/French), 7-day onboarding, and senior reps with 5+ years of experience. Our multichannel prospecting approach delivers BANT-qualified leads at scale.

Our Pick: The Top Outsourced SDR Companies

1. Profitbl

Best for: B2B software companies expanding across European markets.

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Profitbl helps software firms replace inconsistent pipeline generation with a predictable, data-driven outbound system. Based in Luxembourg, they provide SDR-as-a-Service programs built for complex B2B sales across Benelux, Switzerland and the UK. 

Their multilingual SDRs bring 5+ years of experience, combining strategy, data, and tech-enabled execution to deliver qualified meetings. Profitbl has proven experience across B2B SaaS, Cybersecurity, HR Tech, and Fintech. They’re an ideal partner for B2B companies seeking a reliable partner to scale revenue across Europe.

Strengths:

• 7-day onboarding and structured GTM creation
• Senior SDRs with 5+ years of experience
• Deep specialization in complex B2B software sales
• Multilingual coverage (English/French)
• Measurable ROI through BANT-qualified meetings

Services:

• SDR-as-a-Service
• Go-to-Market strategy creation
• Multichannel outbound execution (email, LinkedIn, phone)
• Campaign optimization and reporting

Website | Case Studies | Contact

2. Vaekst

Best for: B2B tech and SaaS companies expanding into Nordic markets.

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Based in Denmark with offices in Sweden and Norway, Vaekst focuses on building predictable outbound systems for tech companies targeting the Nordic region. Their SDRs are trained in-house through a structured learning program, ensuring high consistency and strong local knowledge. With a proprietary GTM platform and a data-driven approach, Vaekst helps clients establish traction quickly and sustain it through high-quality pipeline delivery.

Strengths:

• Nordic market specialization (Denmark, Sweden, Norway)
• Proprietary GTM technology and methodology
• Multilingual team fluent in English, Danish, Swedish, and Norwegian
• Structured training and playbook evolution
• Focus on technical and complex B2B products

Services:

• SDR outsourcing and B2B appointment setting
• GTM strategy and localization
• Channel development and lead qualification
• Ongoing reporting and campaign refinement

Website

3. Belkins

Best for: Startups and SMBs seeking a one-stop shop for lead generation and marketing.

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Headquartered in the U.S., Belkins blends SDR outsourcing with marketing enablement to create a unified demand-generation engine. With over 2,000 clients served across 50 industries, they’ve become one of the most recognized global players in outbound sales. Belkins invests heavily in proprietary outreach software, giving clients a strong advantage in email deliverability and campaign performance.

Strengths:

• Proprietary email and deliverability technology
• 2,000+ clients served globally
• Broad industry experience and scalable operations
• Offers combined SDR and marketing services

Services:

• SDR outsourcing and appointment setting
• Cold email and LinkedIn outreach
• Account-based marketing and content creation
• Deliverability consulting and CRM enablement

Website

4. Memory Blue

Best for: Enterprise SaaS and cybersecurity vendors needing global SDR coverage.

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MemoryBlue is an industry leader with over 20 years in business and 650+ SDRs operating across 30 countries. Their acquisition of Operatix strengthened their European footprint and technical expertise, positioning them as a top choice for enterprise-level clients. MemoryBlue’s academy model develops SDRs internally while also offering sales enablement programs for clients, ensuring consistent quality and methodology across all engagements.

Strengths:

• Global coverage across 30+ countries
• Proven track record with 2,000+ clients
• In-house academy and training programs
• Deep technical sales experience (SaaS, Cybersecurity, Fintech)
• Option for SDR outplacement to client teams

Services:

• SDR and inside sales outsourcing
• Marketing-enabled outbound campaigns
• Sales training and academy programs
• Reporting, analytics, and CRM integration

Website

5. The Sales Factory

Best for: North American B2B companies seeking end-to-end outbound sales operations.

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The Sales Factory is a Canada-based sales outsourcing provider with a strong operational presence in Florida. They offer a full-cycle revenue enablement model that combines SDR outsourcing with account executive support, customer success, and sales training. 

What sets The Sales Factory apart is its strong focus on playbook creation and SDR development. Every engagement begins with a two-week onboarding phase dedicated to GTM design and message testing before outreach begins. 

With a dedicated academy program, TSF helps clients build scalable, repeatable sales systems while maintaining consistent communication through dedicated operations managers.

Strengths:

• Comprehensive outbound model (SDR to AE to Customer Success)
• 2-week onboarding with custom GTM design
• Internal academy to train and upskill SDRs
• Transparent communication via dedicated account managers
• Experience across B2B tech, software, and industrial sectors

Services:

• SDR outsourcing and appointment setting
• Account executive and customer success outsourcing
• Sales playbook creation and training
• GTM strategy and outbound campaign management

Website

6. DMT Business Development

Best for: Early-stage startups and growing SMBs seeking affordable, flexible multichannel outbound programs.

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DMT Business Development offers outsourced SDR services designed for startups looking to validate or scale their outbound strategy. Headquartered in Canada with a delivery hub in Ukraine, DMT combines cost-efficient operations with a hands-on management approach. 

Their model pairs each client with a delivery manager, researcher, SDR, and growth marketer to ensure campaigns are aligned from data sourcing to outreach. While their SDRs tend to have less experience than enterprise-focused providers, DMT stands out for its agility, fast onboarding, and ability to execute across multiple channels.

Strengths:

• Affordable and flexible engagement model
• Dedicated cross-functional delivery teams
• Multichannel outreach combining sales and marketing
• Ideal for early-stage companies testing new markets
• Quick turnaround and scalable delivery capacity

Services:

• SDR outsourcing and appointment setting
• Lead research and data enrichment
• Email, LinkedIn, and cold calling campaigns
• Growth marketing and inbound support

Website

7. Pipeful

Best for: Growth-stage companies seeking high-volume outbound execution with integrated data and infrastructure capabilities.

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Pipeful blurs the line between technology provider and SDR agency. Based in San Francisco, the company operates across 25 countries and provides both sales development services and proprietary tools for data sourcing and cold email infrastructure. 

Their approach is heavily technology-driven, emphasizing automation, scale, and speed. With a team of 100+ sales professionals, Pipeful delivers omnichannel outreach powered by its own database and deliverability stack. On the other hand, their generalist model and limited vertical specialization may not suit firms with highly technical or regulated products.

Strengths:

• Proprietary data platform and cold email infrastructure
• Global delivery presence across 25 countries
• Large SDR network for high-volume outreach
• Integrated sales tech stack for scalability
• Fast deployment and performance-based tiers

Services:

• SDR outsourcing and lead generation
• Data enrichment and list building
• Cold email and LinkedIn outreach
• Demand generation and infrastructure setup

Website

How to Choose the Right SDR Partner for Your Company

Selecting the right partner goes beyond checking service lists or case studies. It’s about finding a team that understands your business model, product complexity, and buyer psychology.

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Our recommended steps for choosing the best-fit provider are as follows:

Step 1: Assess strategic alignment

Start by evaluating whether the provider helps you define your Ideal Customer Profile (ICP), messaging, and value proposition. Agencies that invest time in Go-to-Market creation tend to outperform those that only focus on volume.

Step 2: Check qualification standards

Ask how they define a “qualified meeting.” Are they using a clear framework like BANT (Budget, Authority, Need, Timeline)? Quality control is what separates pipeline growth from calendar clutter.

Step 3: Validate industry experience

If your product is complex (e.g., cybersecurity, fintech, or SaaS), the SDRs should have prior exposure to similar verticals. This ensures technical credibility and better engagement with decision-makers.

Step 4: Review reporting and ROI tracking

Transparency matters. Ask to see sample dashboards, conversion rates, and how results are tied to revenue impact and not just meeting volume.

Step 5: Request case studies and proof of performance

Established partners publish client results showing measurable ROI and predictable revenue outcomes. Seeing real data builds confidence in execution quality.

At Profitbl, we’ve helped B2B SaaS companies drive significant revenue at scale. Check out our case studies.

Profitbl: Your Partner for Building Predictable Revenue

Outsourced SDR programs are no longer just about saving time or cutting costs. They’re about building a predictable, repeatable revenue engine.

When executed strategically, outsourcing delivers both speed and scalability: faster ramp-up, improved conversion, and consistent ROI visibility.

For B2B tech companies navigating complex European markets, we at Profitbl combine strategy, process, and senior-level expertise to create measurable growth.

Our SDR-as-a-Service model provides:

• Multilingual outbound SDRs specialized in complex B2B software.
• 7-day onboarding and full GTM creation.
• Proven record across SaaS, Cybersecurity, Fintech, and HR Tech.

See how our European SDR teams can accelerate your qualified pipeline.

Book a 30-minute call today.