{"id":119538,"date":"2026-03-17T11:23:59","date_gmt":"2026-03-17T15:23:59","guid":{"rendered":"https://mercurylabsmarketing.com/?p=119538"},"modified":"2026-08-13T09:54:08","modified_gmt":"2026-08-13T13:54:08","slug":"outsourced-sales-marketing-companies","status":"publish","type":"post","link":"https://mercurylabsmarketing.com/__callbox_upstream/cms/growth-hacking/outsourced-sales-marketing-companies/","title":{"rendered":"Best Outsourced Sales and Marketing Companies For B2B Growth"},"content":{"rendered":"\n

If your pipeline is running dry and your internal team is stretched thin, partnering with outsourced sales and marketing companies might be the most strategic move you make this year. For B2B teams navigating long sales cycles, complex buying committees, and relentless pressure to hit quota, outsourcing is no longer a workaround, it’s a competitive weapon.

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This guide breaks down the top providers, what separates the best from the rest, and how to choose a partner that actually moves revenue.

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Need extra hands for your sales and marketing without extra headaches?

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\n Try Outsourcing SDR \n
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Why B2B Teams Are Betting Big on Outsourcing Right Now

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Let’s not sugarcoat it: building an in-house SDR team is slow, expensive, and risky. Industry data shows that the average SDR takes 3\u20136 months to ramp to full productivity and attrition rates run between 35\u201340% annually. That’s a revolving door your pipeline can’t afford.

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Meanwhile, the B2B sales environment has gotten harder. Buying committees are larger. Prospects are more skeptical. And outbound success requires a sophisticated tech stack intent data platforms, AI-powered sequencing tools, multi-channel engagement that most internal teams simply don’t have the budget to build.

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That’s where sales and marketing outsourcing flips the equation:

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Related: Why Sales Outsourcing Fails

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What to Look for in Outsourced Sales and Marketing Agencies

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Not all outsourced sales and marketing agencies are created equal. Before signing anything, vet potential partners against these non-negotiables:

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1. Experience: Generic outbound doesn’t work. Your agency should understand demos, trials, complex buyer journeys, and how to engage CTOs, heads of product, and VP-level decision-makers, not just whoever picks up the phone.

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2. Multichannel Outreach Capabilities: Email alone is dead. Look for agencies that run coordinated campaigns across voice, email, LinkedIn, and chat with intelligent sequencing that adapts to prospect behavior.

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3. Transparent Reporting & Pipeline Visibility: Insist on real-time dashboards, SQLs vs. MQLs breakdowns, campaign-level performance data, and clear attribution. If a vendor can’t show you exactly what they’re doing and what it’s producing.

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4. Proprietary Data & Tech Stack: The best providers don’t rent third-party data; they own enriched, verified B2B databases and leverage AI for targeting, lead scoring, and message personalization.

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5. Proven Track Record with Case Studies: Results in the real world matter more than pitch decks. Ask for industry-specific case studies, conversion benchmarks, and references from clients.

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Discover the Pros and Cons of Outsourcing SDR Services

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Top Outsourced Sales and Marketing Companies for 2026

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Here’s a curated list of the leading outsourced sales and marketing services providers worth evaluating \u2014 each with distinct strengths for different stages and budgets.

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1. Mercury Labs

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Best for: SaaS, tech, fintech, cybersecurity, and AI companies at the mid-market to enterprise level

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\"Mercury
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Mercury Labs is the longest-tenured full-service B2B lead generation company in the category, with 20+ years of operation, 10,000+ campaigns delivered, and a client roster spanning 60+ countries. What separates Mercury Labs from the pack is its Human + AI approach \u2014 combining trained SDR specialists with its proprietary Smart Engage platform for account-based targeting, automated multichannel sequencing, and real-time analytics.

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Key services include:

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Notable results: One AI SaaS company generated 59 SQLs and 827 MQLs within six months.

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Want to see what a Mercury Labs campaign looks like in action?

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\n Book Appointment \n
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2. CIENCE Technologies

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Best for: Companies that want to blend human research with machine learning

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\"Cience
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CIENCE combines deep manual prospecting with ML-powered data enrichment and sequencing tools. Strong fit for tech companies with complex ICP definitions that need precision over volume.

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3. SalesRoads

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Best for: SaaS, manufacturing, and healthcare teams needing dedicated SDR teams

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\"SalesRoads
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SalesRoads offers fully managed outbound SDR programs with established methodologies for faster ramp time and consistent pipeline delivery. Strong managerial support and industry-specific playbooks.

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4. Revnew

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Best for: Enterprise SaaS with account-based focus

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\"Revnew
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Revnew’s flagship tools \u2014 TeleIntent (conversation intelligence) and Land Inbox (email deliverability, 87% inbox placement rate) \u2014 make them a standout choice for enterprise ABM campaigns where precision and inbox reach are critical.

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5. MarketStar

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Best for: Fortune 500 and high-growth SaaS companies

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\"MarketStar
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With 35+ years of experience, MarketStar handles everything from lead generation to full-cycle channel sales management. A top choice for organizations that need a deeply integrated outsourced revenue function.

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How Outsourced Sales and Marketing Services Actually Work

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A common misconception is that outsourcing means handing off a list and waiting for leads to appear. The best outsourced sales and marketing services operate as a deeply integrated extension of your internal team.

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Here’s what a high-performing engagement typically looks like:

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  1. ICP & Target Account Development \u2014 The agency analyzes your firmographics, technographics, competitor landscape, and buying intent signals to define your ideal customer profile and build a precise target account list.
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  2. Messaging & Playbook Creation \u2014 Campaign messaging is crafted around your value proposition, buyer pain points, and competitive positioning \u2014 not generic scripts.
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  3. Multichannel Campaign Execution \u2014 Coordinated outreach launches across voice, email, LinkedIn, and where relevant, chat or direct mail \u2014 with intelligent sequencing based on prospect engagement signals.
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  4. Lead Qualification & Handoff \u2014 Prospects are nurtured and qualified before reaching your AEs. SQLs are handed off with full context \u2014 buying signals, pain points, stakeholder map \u2014 so your closers hit the ground running.
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  5. Reporting, Iteration & Optimization \u2014 Real-time dashboards track pipeline velocity, CAC, conversion rates, and campaign performance. Strategy is continuously adjusted based on what’s working.
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Related: Benefits of Outsourcing B2B Sales

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Why Mercury Labs Is the Partner Teams Keep Coming Back To

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Among all the outsourced sales and marketing companies on this list, Mercury Labs stands out for one reason that matters most to teams: depth.

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Where others offer outbound execution, Mercury Labs delivers a full-stack pipeline engine \u2014 AI-assisted targeting, a proprietary verified B2B database, Campaign Pod structure with dedicated specialists, multilingual delivery in 60+ countries, and 20+ years of refinement across 10,000+ campaigns.

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4 of the 5 largest companies in the world use Mercury Labs. But Mercury Labs also scales down effectively for high-growth companies looking to accelerate their go-to-market \u2014 without building the infrastructure from scratch.

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If you’re serious about building a predictable, scalable pipeline for your product, Mercury Labs should be your first call.

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Have questions about how to evaluate outsourced sales and marketing agencies? Drop them in the comments or reach out directly \u2014 we’re happy to help you make the right call.

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Frequently Asked Questions (FAQs)

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Q1: How much do outsourced sales and marketing companies typically charge?

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Pricing varies widely based on scope, geography, and service depth. Most outsourced sales and marketing agencies operate on one of three models:

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For companies, the retainer model is most common because it supports the longer, multi-touch nurture cycles deals require. Always ask vendors to show you the all-in cost \u2014 including data, tooling, and management fees \u2014 before comparing quotes.

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Q2: How long does it take to see results from outsourced sales and marketing services?

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Most reputable outsourced sales and marketing services providers can get campaigns live within 2\u20134 weeks of onboarding. Early pipeline activity \u2014 first outreach, responses, and booked meetings \u2014 typically begins surfacing by weeks 3\u20136.

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That said, realistic expectations matter. The first 30\u201360 days are largely about ICP refinement, messaging testing, and cadence calibration. By months 2\u20133, you should be seeing a consistent flow of qualified appointments. If you’re not seeing meaningful pipeline signals by month 3, it’s time to have a performance conversation with your agency.

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Q3: What’s the difference between outsourced SDR services and a full-service outsourced sales and marketing agency?

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Great question \u2014 and an important distinction:

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For most companies, outsourced SDR services are the right starting point. If you also need demand generation, brand awareness, or integrated marketing alongside outbound, a full-service agency delivers more leverage.

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Explore outsourced sales and marketing companies that boost lead generation, improve outreach, and help B2B companies scale sales faster.

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