Top 11 B2B Sales Outsourcing Companies from the US Worth Hiring in 2025

In 2025, B2B sales outsourcing is no longer a temporary fix; it’s a strategic growth driver for businesses seeking a predictable pipeline without the overhead of scaling enormous in-house teams. From scaling SDR capacity to delivering high-impact account-based campaigns, today’s best outsourced sales partners leverage expert talent, data-driven targeting, and AI-fueled workflows to close more deals, quicker.

But they’re not all the same. Following, we showcase 11 of the most effective B2B sales outsourcing firms. actively assisting businesses to drive revenue growth in the US and globally. 

Why Outsource B2B Sales in 2025?

Today’s customers are cautious, budgets are under the microscope, and CAC is increasing. Sales cycles continue to prolong themselves, and buying committees become increasingly complicated. Under these circumstances, having a specialized, high-level sales development team without incurring recruiting headaches and fixed payroll is an advantage.

As per Martal Group, businesses that use sales outsourcing and expert SDRs are able to have ramp-up time by 40% and lower overall sales expense by 30%, closing deals quicker with higher accuracy and quality data. Here are the 11 Best B2B Sales Outsourcing Companies of 2025:

Intent Amplify® – The AI-Powered Demand Generation Leader

Intent Amplify® is not just another sales outsourcing vendor; we’re a full-funnel, omnichannel growth partner trusted by some of the world’s fastest-growing B2B brands. What sets us apart is our proprietary AI-driven targeting engine, which aligns perfectly with account-based marketing strategies. This ensures every outreach sequence hits the right decision-makers at the right time.

Our skilled team manages end-to-end pipeline creation from accurate lead scoring and multi-touch email programs to appointment setting and real-time performance reporting. Industries include SaaS, cybersecurity, IT networking, fintech, HR tech, and more.

Flexible, scalable programs and a clear ROI commitment make Intent Amplify® a great solution for sales and marketing leaders to drive revenue growth without internal headcount or overhead.

CIENCE Technologies

CIENCE Technologies is a top and most prominent sales outsourcing company in the US with a reputation for combining human research with machine learning. Having more than 2,000 employees across the world, CIENCE enables B2B brands to find, qualify, and engage high-level prospects with a multi-channel outreach approach. They provide custom-built sales research, data enrichment, SDR teams, and managed appointment setting. Tech startups and mid-market B2B businesses commonly depend on CIENCE in order to scale outreach quickly without sacrificing lead quality. Significantly, CIENCE has been listed on Inc. 5000 more than once, demonstrating its fast-growing and consistent growth within the market for lead generation. 

Martal Group

Martal Group has established a solid reputation for assisting North American and international tech businesses in entering new markets as well as boosting sales without establishing in-house sales teams. They offer senior-level SDRs and fractional sales executives who act as a seamless extension of an internal client team. Martal’s methodology focuses on personalized outreach, in-depth prospect research, and high-touch relationship-building, guaranteeing increased conversion rates from cold email to booked meetings. Their clients are SaaS startups and established software companies expanding into the US and Canada. Numerous clients value Martal’s ability to scale up or down resources seasonally or campaign-specific.

SalesRoads

SalesRoads is a reliable, premium US-based teleprospecting, appointment setting, and inside sales partner. Established in 2006, they have become known for using highly skilled, native-English SDRs who provide personalized outreach instead of canned scripts. The firm’s fastidious quality control guarantees that each meeting set is aligned with the client’s optimal customer profile, enhancing sales team win rates. SalesRoads also offers comprehensive call recordings and performance insights, offering clients complete visibility into campaign ROI. Most B2B brands in high-complexity industries such as manufacturing, logistics, and technology rely on SalesRoads for customized pipeline acceleration.

Belkins

Belkins quickly established itself as one of the best-recommended B2B sales appointment setting firms, particularly for SaaS providers and marketing firms. It specializes in personalized outreach campaigns that employ human researchers to uncover highly targeted contacts and then design 11:1 truly personal emails. Belkins has a history of getting clients scheduled 10–50 qualified appointments per month, with a strong focus on measurable ROI and flexible agreements. Their consulting division also helps to enhance clients’ internal lead gen processes. This dedication to personalization and disclosure has made Belkins the recipient of many industry awards and a loyal customer base.

MarketStar

MarketStar is among the oldest and most reputable firms in outsourced B2B selling, with experience dating back over 35 years. Based in Utah, the company works with high-profile tech companies, SaaS providers, and Fortune 500 businesses to manage everything from lead generation to channel sales management. MarketStar has experience across several sales disciplines, such as field sales, partner enablement, and customer success management. They boast a global delivery model and strong playbook for scaling sales teams quickly while still upholding brand integrity. Big companies select MarketStar for its industry expertise and experienced sales talent. 

EBQ

EBQ provides a one-of-a-kind “team as a service” model with fully-formed sales, marketing, and customer success teams available on demand. Customers can utilize full teams or supplement individual roles. Such as SDRs, account execs, or support reps, based on growth initiatives. This modular model enables mid-market companies and startups to leverage their go-to-market operations without the training and HR burden. EBQ is renowned for clear billing, single-point-of-contact project managers, and transparent pipeline reporting that customers can rely upon. Most SaaS enterprises and B2B service providers use EBQ as a cost-effective method to pilot new verticals and geographic regions with reduced risk.

Operatix (Also Memory Blue)

Operatix is a B2B sales growth company with a solid presence in the tech space, focusing on pipeline building for mid-market and enterprise-level accounts. They have skilled SDRs with a clear understanding of working with complex buying groups and explaining advanced product value propositions. Operatix has a global presence, with North American and European offices, so they are a good fit for tech businesses looking to scale globally. Their offerings are outbound prospecting, inbound lead qualification, and account-based outreach campaigns. Customers appreciate Operatix for providing pipelines quicker than hiring an in-house team due to their process-driven delivery and experienced staff.

JumpCrew

JumpCrew stands out as the only company that combines outsourced sales execution with digital marketing capacity to both raise awareness and drive conversions for B2B brands. They focus on working with growth-stage businesses and SMBs that require more than a cold call, providing social media management, SEO, and content creation in addition to SDR services. The combined model assists clients in generating leads, nurturing, and booking high-quality sales appointments all in one place. JumpCrew has been recognized by Inc. 5000 and other business growth award programs due to its high growth and fresh take on revenue operations.

Acquirent

Acquirent, headquartered in Evanston, Illinois, provides outsourced inside sales forces that specialize in recruiting, training, and managing SDRs who represent clients ethically. They are known to create tailored sales approaches that mature with a client’s established pipeline, which is why they are best suited for early-stage and mid-size B2B firms. Acquirent provides lead generation, sales training, CRM implementation, and fractional sales management in order to give maximum outcomes. They value accountability, offering high-performance monitoring and bi-weekly strategy sessions with clients. Their location in the Midwest allows them to offer North American clients affordable, high-quality teams. 

Ziff Davis B2B (formerly Salesify)

Ziff Davis B2B, part of the respected Ziff Davis publishing and data network, is a top provider of data-driven lead generation and outsourced SDR services. They construct massive proprietary databases across tech verticals, delivering clients targeted lists of contact and intent data that improve engagement accuracy. Beyond lead lists, they implement full-funnel marketing programs like content syndication, appointment setting, and nurturing workflows. Ziff Davis B2B is trusted by Enterprise IT and SaaS organizations for high-volume, large-scale campaigns that demand both volume and high-quality lead qualification. Their data savvy and coverage qualify them as a go-to option for demand generation within an industry.

How to Choose the Proper B2B Sales Outsourcing Partner

Choosing a proper partner isn’t solely about cost; it’s about cultural fit, industry acumen, data accuracy, and track record. Look for transparent reporting, flexible contracts, and an employee base that understands your target accounts.

First and foremost, make sure your outsourced reps sound like an extension of your internal sales team, rather than a third-party telemarketing firm. Consistency and credibility build trust with today’s buyer.

We do not outsource here at Intent Amplify®; we become a strategic revenue partner for you. Our proprietary AI, highly trained SDR teams, and commitment to personalized, account-level outreach drive pipeline results higher than list-pushing or one-size-fits-all scripts.

We believe in measurable ROI, radical transparency, and continuous improvement. That’s why high-growth SaaS firms, cybersecurity providers, and IT leaders trust us to power sales outreach that converts and scales as they do.

FAQs: 

1. What is B2B sales outsourcing?

It’s the outsourcing of some or all of your sales development, such as lead research, cold calling, and appointment setting, to an outside partner and allowing your in-house team to focus on closing business.

2. Is sales outsourcing cost-effective?

Yes, it will reduce your overhead costs by up to 30% and substantially lower ramp times compared to hiring, bringing on, and training internal SDRs.

3. What do I look for in an outsourcing sales firm?

Look for sector experience, transparent reporting, bespoke strategies, and a great reputation. Check client case studies and ask about staff training and management.

4. How long before I see results?

Matched companies typically start to experience qualified meetings in the first 30–60 days, with the pipeline expanding steadily by month 3.

5. Why should I choose Intent Amplify® over other agencies?

Since we bring together best-in-class AI, human ingenuity, and proven ABM methodologies, we give you more effective conversations, faster pipeline velocity, and end-to-end ROI visibility.

Now, let’s build your ultimate 2025 sales pipeline. Let’s talk. Speak to an Intent Amplify® strategist today.

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