Top 10 Sales Outsourcing Companies for B2B Growth in 2026: A Complete Comparison Guide

For most of the last decade, the build-vs-buy question in B2B sales had a default answer: build. Hire SDRs, train them, manage them, and own the outbound function end-to-end. That answer is changing.

Rising rep costs, shorter average tenure, longer ramp times, and the emergence of AI-augmented outreach have made the math harder to defend. A growing number of B2B revenue leaders are reconsidering whether keeping outbound fully in-house actually serves their growth goals — or whether a specialized partner can ramp faster, cost less, and produce more predictable pipeline.

This guide examines that shift and profiles the leading outsourced SDR companies shaping the new outsourcing landscape. Each profile follows a parallel structure so revenue leaders can compare side by side: company overview, founding details, key services, industries served, and the specific buyer profile they fit best.

The Build vs. Buy Reckoning in B2B Sales

The case for building an internal SDR team has weakened on three fronts.

Cost. A single full-time SDR in North America now costs $80,000 to $120,000 fully loaded — salary, benefits, tooling, and management overhead. Layer in the average 14 to 18 months of tenure before reps either move to closing roles or leave entirely, and the lifetime ROI gets thin.

Ramp time. Most internal SDRs take three to six months to reach full productivity. For companies entering new markets, launching new products, or scaling quickly, that’s three to six months of opportunity cost.

Productivity. According to HubSpot’s 2024 Sales Trends Report, sales reps only spend about two hours per day actually selling — the remainder gets consumed by research, admin, and prospecting tasks. The economics of paying internal headcount to do work that specialized firms have systematized are increasingly hard to justify.

The case for outsourcing has strengthened in parallel. Modern sales outsourcing partners arrive with established outreach infrastructure, AI-augmented prospecting tools, deliverability systems, and senior reps who don’t need to be trained from scratch. Most can deliver first qualified leads within 30 days of kickoff — a timeline that internal hiring simply cannot match.

The remaining question is which partner is the right fit. Below is a comparison of the top 10 sales outsourcing companies for B2B growth in 2026.

Quick Comparison Table

The Top 10 Sales Outsourcing Companies for 2026

1. Martal Group

Martal Group is a B2B sales outsourcing company that combines senior onshore sales executives with a proprietary AI sales platform. The company has worked with over 2,000 brands across 50+ verticals over 16+ years and holds a #1 ranking in lead generation on Clutch.

• Founded: 2009
• Headquarters: Toronto, Canada
• Best for: B2B companies that want a fully managed sales outsourcing partner with structured onboarding and onshore delivery
• Key services: Outbound lead generation, appointment setting, cold calling, cold emailing, LinkedIn lead generation, sales outsourcing
• Industries served: SaaS, cybersecurity, fintech, healthcare, AI/ML, logistics, energy, and more
• Notable differentiator: Onshore teams across North America, Europe, and LATAM combined with a proprietary AI sales platform; structured 7–10 business day onboarding
• Pricing model: Tiered monthly retainer based on engagement scope

2. Belkins

Belkins is one of the most established names in B2B appointment setting and lead generation, recognized as a top-rated lead generation provider on Clutch. The company has worked with over 1,000 clients across 50+ industries and reports scheduling more than 200,000 appointments to date.

• Founded: 2017
• Headquarters: Dover, Delaware, USA
• Best for: Mid-market B2B companies seeking broad multi-industry appointment setting and lead generation
• Key services: Appointment setting, cold email outreach, LinkedIn lead generation, lead research, account-based marketing
• Industries served: SaaS, fintech, healthcare, manufacturing, professional services, IT services
• Notable differentiator: Multi-touch outreach model combining email, LinkedIn, calling, and SMS with appointment confirmation and no-show recovery
• Pricing model: Monthly retainer starting around $8,000

3. CIENCE

CIENCE operates a “People-as-a-Service” model that combines outsourced SDR teams with proprietary data science and outreach technology. The company is known for high-volume outbound execution backed by data enrichment tools and a multi-team delivery structure.

• Founded: 2015
• Headquarters: Solana Beach, California, USA
• Best for: Enterprise and mid-market companies that need data-heavy, high-volume outbound execution
• Key services: Outbound SDR teams, inbound SDR services, lead research, data enrichment, multi-channel outreach
• Industries served: SaaS, enterprise software, technology, professional services, manufacturing
• Notable differentiator: Strong data science orientation and proprietary CIENCE platform for campaign experimentation and optimization
• Pricing model: Monthly retainer per dedicated SDR/team

4. SalesRoads

SalesRoads is a US-based appointment setting and outsourced SDR firm with a focus on mid-market B2B outbound. The company emphasizes a custom playbook approach for each client and has been operating in the space since 2007.

• Founded: 2007
• Headquarters: Coral Springs, Florida, USA
• Best for: Mid-market B2B companies targeting US buyers with custom-built outbound playbooks
• Key services: Appointment setting, outbound SDR teams, lead generation, sales development consulting
• Industries served: Technology, business services, manufacturing, healthcare, financial services
• Notable differentiator: Custom-built campaign playbooks per client, with dedicated SDR teams operating as an extension of internal sales
• Pricing model: Monthly retainer with pilot campaign options

5. memoryBlue (formerly Operatix)

memoryBlue is the result of a 2023 merger between memoryBlue and Operatix that created one of the largest sales acceleration providers focused specifically on the B2B technology ecosystem. The combined company runs sales development programs across North America, EMEA, LATAM, and APAC.

• Founded: 2002 (Operatix joined in 2023)
• Headquarters: Tysons, Virginia, USA
• Best for: B2B technology companies — particularly cybersecurity and enterprise SaaS — needing globally distributed SDR coverage
• Key services: Outsourced SDR/BDR teams, full-cycle sales support, marketing services, sales training
• Industries served: Cybersecurity, enterprise SaaS, fintech, AI, public sector, high-tech
• Notable differentiator: Proprietary Compass performance intelligence system; deep tech-sector specialization with offices across NA, EMEA, and APAC
• Pricing model: Custom-scoped retainer per engagement

6. EBQ

Based in Austin, Texas, EBQ takes a full-service approach to outsourced sales — combining SDR teams, lead qualification, data services, marketing execution, and CRM consulting into a single managed engagement, typically aligned to Salesforce or HubSpot environments.

• Founded: 2006
• Headquarters: Austin, Texas, USA
• Best for: Mid-market and enterprise B2B companies wanting outsourced sales as part of a broader sales-and-marketing operation with deep CRM integration
• Key services: Outsourced SDR/BDR teams, appointment setting, lead qualification, data services, CRM implementation, marketing automation
• Industries served: Technology, SaaS, financial services, manufacturing, professional services
• Notable differentiator: Full-funnel managed-services model with dedicated revenue consultant, project manager, and specialists per engagement
• Pricing model: Monthly retainer starting at $5,000 for half-time specialists

7. JMS Elite

JMS Elite specializes in B2B lead generation and appointment setting for companies selling complex, high-ticket products and services. Now in its 21st year, the firm focuses exclusively on industries with long, consultative sales cycles.

• Founded: 2003
• Headquarters: Cleveland, Ohio, USA
• Best for: Companies selling complex, high-ticket B2B solutions with long sales cycles
• Key services: B2B lead generation, outsourced inside sales, market validation, lead nurturing, teleprospecting, appointment setting
• Industries served: Healthcare, life sciences, financial services, manufacturing, information technology, retail
• Notable differentiator: Senior Business Development Executives with 10+ years of business experience — not entry-level appointment setters
• Pricing model: Project-based retainer (no pay-per-appointment model)

8. Acquirent

Acquirent is a Chicago-area sales outsourcing firm known for combining outsourced SDR services with sales training and full-cycle sales support. The company emphasizes hiring, training, and retaining its own sales talent rather than rotating contractor reps.

• Founded: 2004
• Headquarters: Evanston, Illinois, USA
• Best for: Mid-market companies that want full-cycle sales execution combined with sales process improvement
• Key services: Outsourced SDRs, full-cycle sales teams, sales training, sales recruiting, fractional VP of sales
• Industries served: SaaS, manufacturing, healthcare, financial services, professional services
• Notable differentiator: Integrated sales training program that develops reps over time rather than rotating short-tenure SDRs
• Pricing model: Monthly retainer per dedicated rep or team

9. Callbox

Callbox is one of the most established names in B2B appointment setting, with over 20 years of operations and a team of 700+ sales and marketing professionals. The company offers multi-region coverage with execution capability across North America, EMEA, and APAC.

• Founded: 2004
• Headquarters: Encino, California, USA (with operations in APAC)
• Best for: Companies needing multi-region outbound coverage, particularly cross-border into APAC
• Key services: Appointment setting, lead generation, account-based marketing, event marketing, database services
• Industries served: SaaS, cloud, cybersecurity, fintech, manufacturing, healthcare
• Notable differentiator: Proprietary Smart Engage platform orchestrating outreach across phone, email, LinkedIn, web chat, and event channels
• Pricing model: Custom monthly retainer based on campaign scope

10. SalesHive

SalesHive is a Denver-based outsourced SDR firm known for transparent month-to-month pricing and a tech-forward approach to outbound. The company runs cold email, LinkedIn, and cold calling campaigns for mid-market B2B clients with a focus on cost efficiency and contract flexibility.

• Founded: 2016
• Headquarters: Denver, Colorado, USA
• Best for: Mid-market B2B companies wanting flat-rate, month-to-month outbound without long-term commitments
• Key services: Cold email, cold calling, LinkedIn outreach, SEO services, AI-powered sales tools
• Industries served: SaaS, technology, professional services, manufacturing, business services
• Notable differentiator: Flat monthly pricing with no long-term contracts; in-house tech stack including AI email and CRM tools
• Pricing model: Flat monthly retainer, month-to-month

How to Choose a Sales Outsourcing Partner

The right partner depends less on brand recognition and more on alignment to four factors:

Industry specialization. A firm that has run hundreds of campaigns in your vertical will outperform a generalist almost every time. Cybersecurity, healthcare, fintech, and complex enterprise sales each have distinct buying cycles, compliance considerations, and decision-maker dynamics.

Delivery model. Fully managed engagements (the firm owns end-to-end execution) suit companies that want hands-off pipeline. Hybrid models (the firm augments your internal team) suit companies with existing sales motions. Choose based on how much internal capacity you actually have to manage a vendor.

Channel mix. Some firms lead with cold email, others with B2B cold calling services, others with LinkedIn-first outbound. Match the firm’s channel strength to where your buyers actually engage.

Reporting and visibility. Weekly reporting cadence, live pipeline dashboards, and named account leads should be table stakes. If a firm is opaque about activity volume or won’t share live performance data, that’s a flag.

Frequently Asked Questions

What does a sales outsourcing company do? A sales outsourcing company provides external sales talent and infrastructure to handle some or all of a B2B company’s outbound sales function — typically including prospecting, lead research, multi-channel outreach (email, phone, LinkedIn), lead qualification, and appointment setting. Some firms extend into full-cycle sales, including discovery calls, product demos, and deal closure.

How much does sales outsourcing cost? Pricing varies by engagement model. Monthly retainers typically range from $5,000 to $15,000+ per dedicated SDR or specialist, with most full-service engagements landing between $8,000 and $20,000 per month. Pay-per-appointment models exist but generally produce lower-quality leads and are best avoided for complex B2B sales.

When should a B2B company outsource sales? Outsourcing makes the strongest sense when a company needs to ramp pipeline quickly, lacks internal SDR management bandwidth, is entering a new market or vertical, or wants to test outbound before committing to permanent headcount. It’s a poor fit for companies with extremely niche products that require deep technical training or for organizations not ready to commit to ongoing collaboration on ICP and messaging.

What’s the difference between outsourced SDRs and an appointment setting agency? The terms overlap significantly. Outsourced SDRs typically refer to dedicated representatives operating as an extension of the client’s sales team, while appointment setting agencies often deliver scheduled meetings as the primary deliverable. Many firms — including most on this list — offer both models.

How long does it take to see results from a sales outsourcing partner? Most fully managed sales outsourcing engagements deliver first qualified leads within 30 days of kickoff, with consistent SQL volume by day 60–90. Onboarding typically takes 7–14 business days, followed by a 1–2 week ramp before campaigns reach full activity volume.

The Bottom Line

The build-vs-buy decision in B2B sales is no longer binary. Modern outsourcing partners offer faster ramp, predictable cost structures, and access to AI-augmented outreach infrastructure that few internal teams can match in 2026. The 10 companies above represent a cross-section of the market — by industry specialization, geography, and engagement model — and reflect where serious B2B revenue leaders are placing their bets this year.

Choose for fit, not for brand. The right partner is the one whose specialization, delivery model, and reporting discipline match the way your team actually operates.