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10 Best SDR Outsourcing Companies in 2025

13 min read

Outsourcing your SDR function can accelerate pipeline growth without the overhead of hiring and training an in-house team. Here are the top SDR outsourcing companies in 2025, what they offer, and how to choose the right partner.

Why Outsource SDRs?

Faster Time to Market: Launch outbound campaigns in weeks instead of months

Lower Costs: Avoid recruitment, training, tools, and management overhead

Expertise: Access proven processes, tools, and best practices

Scalability: Easily scale up or down based on needs

Focus: Let your internal team focus on closing deals

1. Niyyah Edge

Niyyah Edge specialises in building automated outbound AI engines for B2B companies. We combine AI-powered research, personalisation, and multichannel outreach to deliver qualified meetings in 30 days.

Best for: Companies wanting AI-powered, fully managed outbound systems

2. Belkins

Belkins is a B2B appointment setting agency that focuses on cold email and LinkedIn outreach. They handle everything from list building to meeting scheduling.

Best for: Mid-market B2B companies needing appointment setting services

3. Martal Group

Martal Group provides outsourced B2B sales development with dedicated SDR teams. They focus on tech and SaaS companies with complex sales cycles.

Best for: Tech and SaaS companies with enterprise sales

4. Leadium

Leadium offers outsourced SDR services with a focus on cold calling and multichannel outreach. They provide dedicated SDR teams that integrate with your sales process.

Best for: Companies wanting dedicated SDR teams with cold calling

5. CIENCE

CIENCE combines human SDRs with AI and automation to scale outbound prospecting. They offer both managed services and software solutions.

Best for: Enterprise companies needing high-volume prospecting

6. SalesRoads

SalesRoads provides US-based SDR teams specialising in cold calling and appointment setting. They focus on quality conversations over volume.

Best for: Companies prioritising cold calling with US-based reps

7. Callbox

Callbox offers multichannel B2B lead generation including cold calling, email, and social media. They serve various industries with flexible engagement models.

Best for: Companies needing multichannel lead generation at scale

8. EBQ

EBQ provides outsourced sales development with a focus on technology companies. They offer both onshore and offshore SDR teams.

Best for: Tech companies needing flexible SDR team locations

9. SalesHive

SalesHive combines AI-powered prospecting with human SDRs for B2B appointment setting. They focus on cold email and LinkedIn outreach.

Best for: Companies wanting AI-assisted SDR services

10. Pearl Lemon Leads

Pearl Lemon Leads offers B2B lead generation and appointment setting services with a focus on personalised outreach and relationship building.

Best for: Companies prioritising personalised, relationship-driven outreach

How to Choose the Right SDR Outsourcing Partner

1. Define Your Goals: Meetings booked? Pipeline generated? Specific industries?

2. Check Industry Experience: Do they understand your market and buyer personas?

3. Review Their Process: How do they research, target, and personalise outreach?

4. Ask About Technology: What tools and automation do they use?

5. Understand Pricing: Per meeting? Monthly retainer? Performance-based?

6. Request Case Studies: Look for results with similar companies

7. Evaluate Communication: How often will they report and update you?

8. Start Small: Test with a pilot program before scaling

Key Questions to Ask

• What's your average meeting-to-opportunity conversion rate?

• How do you ensure lead quality?

• What's your ramp-up timeline?

• How do you handle objections and follow-ups?

• What reporting and analytics do you provide?

• How do you integrate with our CRM and sales process?

• What's your contract length and cancellation policy?

In-House vs Outsourced SDRs

Outsource when: You need quick results, lack SDR expertise, want to test new markets, or need to scale rapidly without long-term commitment.

Build in-house when: You have complex sales processes, need deep product knowledge, have the resources to hire and train, or want full control over the process.

Conclusion

Outsourcing SDRs can be a game-changer for B2B companies looking to scale pipeline quickly. The key is finding a partner that understands your market, has proven processes, and aligns with your goals. Start with a pilot, measure results, and scale what works.