Top 11 B2B Sales Outsourcing Companies in US Worth Hiring in 2024

Sales outsourcing may not sound like an option when you have an in-house sales team. But it gives businesses access to expertise, offers more flexibility, saves money, and can support expansion efforts. Though numerous companies offer sales outsourcing services, finding the right one can be challenging. Read on to discover the leading B2B sales outsourcing companies in the US.
Sales are the lifeline of any business. Without them, businesses cannot grow or scale to new markets. Although the best way to keep sales revenue flowing is to work with an in-house sales team, most businesses find it challenging to scale their teams proportionately to handle high volumes of leads that flow into the business. This is where B2B sales outsourcing companies come in handy.
Sales outsourcing involves delegating some or all sales tasks to B2B sales service providers. These are companies that specialize in selling services and products to other businesses. Sales tasks that your company can outsource include prospecting, lead generation, lead scoring, and follow-up, deal closure among others.
Outsourcing sales tasks is the best way to increase your company’s sales performance and efficiency. It enables you to streamline the sales process, reduce costs, and grow revenue without engaging sales professionals full-time. One report showed that outsourcing key sales functions like lead generation can increase returns for B2B companies by up to 43%.
In this article, we highlight 11 leading B2B sales service providers in the US.

Top B2B Sales Outsourcing Companies in US

Below are 11 leading B2B inside sales companies in US:
Sr. No. Company Logo Company Name Services Offered
1 UnboundB2B logo UnboundB2B
  • B2B Lead Generation
  • Appointment Setting
  • B2B Advertising & more
2 Martal Group
  • Account Management
  • Sales Campaigns
  • Customer Onboarding & more
3 Pipeful
  • Email Marketing
  • Cold Calling
  • LinkedIn Outreach
4 Operatix
  • Outbound Sales Development
  • Account-Based Selling
  • Cold Prospecting & more
5 Zapier
  • Account Management
  • Sales Campaigns
  • Customer Onboarding & more
6 Drift
  • Real-Time Personalization
  • Target Account Engagement
  • Visitor Intelligence & more
7 Cleverly
  • Cold Email
  • Google Ad Management
  • White-Label Lead Generation & more
8 Leadium
  • Lead Research and Prospecting
  • Email Campaigns
  • Social Selling & more
9 SalesHive
  • Building Email Domain Credibility
  • Cold Calling
  • Direct Mail Targeting & more
10 JumpCrew
  • Full-Funnel Sales Support
  • Email Marketing
  • Social Selling & more
  • Outreach Campaigns
  • Lead Screening and Identification
  • Call Intelligence and Metadata & more

1. UnboundB2B

UnboundB2B - B2B Inside Sales Outsourcing Company in USUnboundB2B is a top B2B sales outsourcing company specializing in lead and demand generation in the US. The company offers end-to-end B2B account-based marketing, intent-based marketing, and demand generation solutions that help B2B marketers shorten the sales cycle and maximize returns from their marketing budget. UnboundB2B leverages intent data and AI technology to accelerate market demand and generate high-quality leads for B2B companies in the Enterprise Tech industry. UnboundB2B offers an array of B2B sales services that include:
  • Appointment Setting – Links the lead generation process with the sales process. The company has a dedicated team that schedules appointments with promising sales-qualified leads and helps with deal closure to increase sales revenue.
  • B2B Lead Generation – Attract top-of-the-funnel leads and identify marketing-qualified leads through the BANT(budget, authority, need, and timing) lead qualification approach.
  • Inside Sales – A team of sales development representatives helps with sales prospecting. The team identifies prospects, qualifies leads, makes sales calls, follow-ups with prospects, and closes deals.
  • B2B Advertising – Leverages data to segment target audiences, craft programmatic ad creatives, and automate ad purchase and placement for maximum reach.
  • Webinar Promotion – Design optimized webinar landing pages, promote them among prospective attendees, and conduct registrations, follow-ups, and confirmations.
  • Content Syndication – Target key accounts with relevant, highly personalized content assets and leverage a vast contact database to amplify reach.
Discover how an IT solution company create a new sales pipeline and entered the US market successfully with the help of UnboundB2B’s Inside Sales Team.

2. Martal Group

Martial Group is a B2B sales service company that specializes in generating leads for B2B tech companies in the US. The company offers a range of sales services including:
  • Lead generation
  • Account management
  • Sales campaigns
  • Customer onboarding
  • Appointment setting

3. Pipeful

Pipeful is another leading B2B lead generation company in the US. The company helps tech enterprises to fill their sales pipelines with high-quality leads. It specializes in building sales leads lists and scheduling sales meetings with ideal prospects across the world through:
  • Email marketing
  • Cold calling
  • LinkedIn outreach

4. Operatix

Operatix is among the top B2B sales outsourcing companies in the US. This sales service provider specializes in improving sales pipelines, increasing revenue, and accelerating growth for B2B software firms. Operatix provides the following sales services:
  • Lead generation and qualification
  • Outbound sales development
  • Account-based selling
  • Cold prospecting

5. Zapier

Zapier is a sales software that enables B2B companies to automate sales tasks and manage marketing workflows. Using Zapier, sales professionals can:
  • Manage leads and personalize emails
  • Schedule meetings
  • Create a contact database
  • Nurture leads through drip email and webinar campaigns
  • Create forms and capture lead information

6. Drift

Drift is another US-based sales outsourcing platform that helps B2B companies achieve their sales and marketing goals. As a revenue acceleration platform, Drift leverages AI to enhance buyer engagement. Using Conversational Sales and Conversational Marketing techniques, the platform helps B2B companies grow sales revenue and enhance customer lifetime value. Some prominent sales services that Drift offers include:
  • Lead generation
  • Account-based marketing campaigns
  • Real-time personalization
  • Target account engagement
  • Visitor intelligence

7. Cleverly

Cleverly is among the leading B2B sales outsourcing companies that focus on LinkedIn lead generation. The company helps B2B businesses reach prospects through personalized messages that bring conversations right to their inboxes. Cleverly’s LinkedIn outreach process involves building target audience lists, executing LinkedIn outreach campaigns, and handing active leads over to B2B companies.
Other sales services that this company offers include:
  • Cold email
  • Content marketing
  • Google Ad management
  • White-label lead generation

8. Leadium

B2B lead generation company, Leadium leverages data to help companies achieve their quarterly sales revenue goals. It’s one of the leading inside sales outsourcing companies in US that uses technology, data, and strategy to increase sales demand and accelerate sales pipelines for businesses.
The main sales services that Leadium provides include:
  • Outbound and inbound appointment setting
  • Lead research and prospecting
  • Lead generation and management
  • Email campaigns
  • Social selling

9. SalesHive

SalesHive is among the leading US-based B2B sales outsourcing companies that provide long-term marketing strategies to businesses. This sales provider works closely with businesses to craft personalized sales development strategies for increasing sales.
Specifically, SalesHive offers the following services to B2B companies:
  • Building email domain credibility
  • Google ad management
  • B2B list building
  • Email marketing
  • Cold calling
  • Direct mail targeting
  • LinkedIn outreaches

10. JumpCrew

Another leading sales outsourcing company for B2B businesses is JumpCrew. This company adopts the full funnel customer acquisition approach to grow B2B companies. JumpCrew boosts sales revenue for companies by finding high-quality leads, scheduling meetings with prospects, and creating demand for their products or services.
Other sales services that JumpCrew offers include:
  • Appointment setting
  • Lead prospecting and qualification
  • Account management
  • Full-funnel sales support
  • Email marketing
  • Content marketing
  • Social selling

11. is among the leading B2B sales outsourcing companies in the US that leverage artificial intelligence to grow sales pipelines for a wide range of B2B enterprises. The platform offers businesses top-notch customer engagement features to enable them to respond to calls, act on every message, and grow their sales pipeline.
Other sales services available on are:
  • Appointment booking
  • 24/7 Outbound calling and call answering
  • Outreach campaigns
  • Call recording and transcription
  • Lead screening and identification
  • Call intelligence and metadata


Outsourcing sales has become an important aspect of modern-day businesses. It helps companies to outperform their competitors and realize long-term success. If you have an overwhelmed sales team, a limited sales budget, or need to scale your business but lack sales talent, you need the services of B2B inside sales companies. Outsourcing lead generation allows your company to improve and fast-track the sales process through technology.
UnboundB2B offers a range of sales outsourcing services to fill your sales pipeline with high-quality leads. Our end-to-end account-based marketing and intent-based marketing solutions can help you find verified high-value accounts and engage them with the right content at the right time.
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Sophia Westfiel

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