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Outsourced SDRs: 10 Best Companies and the Ultimate Guide [2025 Review]

By Adrienne Bosch Last updated: 18 minute read Lead GenerationMarketing Agencies

It is 2025. Technology and social media platforms have made reaching potential customers at scale easier than ever. However, you need a great sales team to act on all the leads.

What if you don’t have the resources to recruit, hire, and train a great internal sales team? And what if you don’t need a full internal team year-round?

That’s where outsourced Sales Development Representative (SDR) companies come in!

Not only can outsourcing SDRs save you 70% over hiring an in-house sales rep, but they are often more skilled and experienced, which translates into more leads and conversions!

This article will cover everything you need about outsourcing SDR. Plus, we’ll give you a rundown of the ten best companies so that you can make an informed decision.

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    What is an Outsourced Sales Development Representative (SDR)?

    To put it simply, outsourcing SDR is when a company hires sales professionals from a third party to conduct sales activities:

    • Sales strategy: research and identify target markets
    • Sales prospecting: outreach and cold calling
    • Sales funnel management: build a sales pipeline, quality, and nurture leads, manage potential client’s records
    • Account management: communicate with existing clients, resolve problems and complaints, identify gaps and upsell
    Infographic of why you should outsource SDRs
    Source: ReferralRock

    Organizations with lower sales budgets can benefit significantly from it. When outsourcing your sales reps, you don’t have to spend time and money on recruiting and training them. You also have the flexibility on team size.

    On the other hand, B2B and SaaS companies can find it helpful during a massive growth period. The extra sales reps help to fill their pipeline while the company hires and trains additional in-house reps.

    Our Top 10 Picks

    1. SalesRoads

    SalesRoads logo

    SalesRoads

    Boca Raton, Florida, USA

    Our Score

    4.9

     

    AGENCY SNAPSHOT

    Founded: 2007

    Location: Boca Raton, Florida, USA

    Number of employees: 51 – 200

    KEY SERVICES

    • Lead Generation
    • List Building Services
    • Appointment Setting
    • SDR Outsourcing
    • Sales Intent Data
    • Account-based Marketing Data

    NOTEWORTHY CLIENTS

    • Shell Oil
    • Microsoft
    • Parker Hannifin
    • Kuebix
    • Bid Retriever

    WHY CHOOSE THEM?

    SalesRoads is a multi-award-winning B2B sales outsourcing solution that assists manufacturing, logistics, construction, SaaS, and technology companies.

    SalesRoads provides a bespoke sales strategy for every client, rooted in well-researched data and a customized demand generation playbook designed to meet their goals best and achieve meaningful, scalable results.

    They are also experienced in building alliances with firms looking to enter the industrial and manufacturing sectors and the State, Local, and Education (SLED) markets.

    Similarly, its leadership position in the field gives it the confidence to offer a cancel-anytime guarantee and require no long-term contracts.

    SalesRoads Outsourced SDR Homepage

     

    2. Martal Group

    Martal Group logo

    Martal Group

    Oakville, Canada

    Our Score

    4.7

     

    AGENCY SNAPSHOT

    Founded: 2009

    Location: Oakville, Canada

    Number of employees: 51 – 200

    KEY SERVICES

    • B2B appointment setting
    • Sales outsourcing
    • Outbound services
    • Inbound services
    • Monthly leads funnel

    NOTEWORTHY CLIENTS

    • Jedox
    • ZOHO
    • WSA2
    • SoFi
    • ClickWorker

    WHY CHOOSE THEM?

    Martal Group is a top lead-generation business that helps B2B technology companies find new customers and close sales. With top sales executives available on demand, they can work with your sales team to find leads and make sales in more than 50 different industries.

    Furthermore, they work with the best data providers and intelligence marketers to give their clients accurate B2B contact information. Their researchers use a proprietary method to find opportunities and make custom lists based on the type of buyer you want and the potential size of the market you want to reach.

    Homepage - Martal Group
    Source: Martal Group

    3. Operatix

    Operatix Logo

    Operatix

    Ancells Court, United Kingdom

    Our Score

    4.5

     

    AGENCY SNAPSHOT

    Founded: 2012

    Location:  Ancells Court, United Kingdom

    Number of employees: 201 – 500

    KEY SERVICES

    • Market entry acceleration
    • Pipeline generation
    • Scaling
    • Data & intelligence
    • Market fit assessment
    • Expansion into new territories
    • Sales playbook development
    • Channel activation & acceleration

    NOTEWORTHY CLIENTS

    • Recorded Future
    • Crowd Strike
    • NICE
    • Riverbed

    WHY CHOOSE THEM?

    Operatix, a company launched in 2012 with three global offices, focuses on increasing revenue and speeding up growth for B2B enterprise software in North America and Europe.

    In addition to a diverse spectrum of start-ups and emerging computer software suppliers, Operatix has extensive experience working with the world’s largest IT corporations.

    Moreover, they help their clients close more transactions and shorter sales cycles while also raising average transaction values. Their approach combines account-based marketing with account-based selling operations. Likewise, their staff is adept at interacting with corporate contacts to identify decision-makers and arrange the initial sales encounter between prospects and their client’s sales team.

    Homepage - Operatix
    Source: Operatix

    4. Uproar Partners

    Uproar Partners Logo

    Uproar Partners

    Atlanta, USA

    Our Score

    4.9

     

    AGENCY SNAPSHOT

    Founded: 2017

    Location: Atlanta, Georgia, USA

    Number of employees: 11 – 50

    KEY SERVICES

    • Prospecting & Outreach
    • SDR Services
    • Account Executive Services
    • Customer Success
    • Sales Strategy & Playbooks

    NOTEWORTHY CLIENTS

    WHY CHOOSE THEM?

    By using an outsourced Sales-as-a-Service model, Uproar Partners helps the founders and CEOs of B2B digital companies increase their income and lengthen their runway. They become an extension of your business and part of your full-time sales team.

    They know how scary it can be to hire the right people, make the right plans, and set up the best sales culture, and they help to lighten the load.

    Uproar Partners also works with you to increase your sales because they know how important sales are to your business’s success.

    Homepage - Uproar Partners
    Source: Uproar Partners

    5. Belkins

    Belkins Logo

    Belkins

    Dover, DE, United States

    Our Score

    4.5

     

    AGENCY SNAPSHOT

    Founded: 2017

    Location: Dover, Delaware, with offices in Chicago and Denver, USA; Kyiv, Ukraine; and Warsaw, Poland

    Number of employees: 201 – 500

    KEY SERVICES

    • B2B Lead Development
    • Sales Development
    • Strategy
    • Market Research
    • Sales
    • Sales Account Management
    • Lead Qualifying
    • Qualified Appointment Setting
    • Onboarding
    • Outbound Sales Strategy
    • Outbound Marketing
    • LinkedIn Influencer Program
    • Data Science & Consulting
    • Virtual Support

    NOTEWORTHY CLIENTS

    • Cengage
    • Sekisui Products
    • CitrusAd
    • OmniCharge
    • Citcon
    • OpenTeleHealth
    • Maark
    • MONA Payment Solutions
    • 7Wonders Cinema
    • BytePitch
    • Lion Energy
    • Born & Bred
    • Mole Street
    • OutSystems
    • Simply NUC
    • Donorbox

    WHY CHOOSE THEM?

    Belkins is a leading B2B SDR and lead generation company with experience in more than 50 different industries. It helps B2B companies maximize their sales potential by making it easier for them to obtain qualified leads.

    Since its start in 2017, Belkins has generated over 4,760,850 leads for its clients, sent over 2,760,850 emails, and set close to 300,000 appointments.

    Belkins has a large team of sales reps that uses a data-backed approach and cutting-edge technology to help its clients.

    Their dedicated team and unique approach have earned them more than 1,000 satisfied clients and an impressive retention rate of 95%.

    Belkins has been recognized as the #1 appointment-setting agency for 5 years in a row and has won numerous industry awards from Inc. Magazine, Clutch, The Stevie Awards, G2, and many more.

    Screenshot of the Belkins Ousourced SDR Homepage

    6. CIENCE

    CIENCE logo

    CIENCE

    Solana Beach, USA

    Our Score

    4.3

     

    AGENCY SNAPSHOT

    Founded: 2015

    Location: Solana Beach, California, USA

    Number of employees: 1001 – 5000

    KEY SERVICES

    • Sales data solutions
    • Outbound SDR
    • Inbound SDR

    NOTEWORTHY CLIENTS

    • Okta
    • Microsoft
    • Google

    WHY CHOOSE THEM?

    To assist you in developing your business, CIENCE provides software and Orchestrated Outbound services such as their premium sales data, multi-channel prospecting, lead response, and digital ad platform.

    It offers both human and machine-powered services and products that generate leads for B2B companies.

    Their trained SDRs will lead you through a unique Prospect Experience using best practices for reaching out through multiple channels and setting up appointments. This means appointments will be set up more often.

    Their customers also benefit from more targeted leads, a steady pipeline, and increased revenue. What’s more, its people-as-a-service (PaaS) method gets the best results for the least amount of money.

    Homepage -CIENCE
    Source: CIENCE

    7. Lunas

    Lunas logo

    Lunas

    Toronto, Canada

    Our Score

    4.8

     

    AGENCY SNAPSHOT

    Founded: 2021

    Location: Toronto, Ontario, Canada

    Number of employees: 11 – 50

    KEY SERVICES

    • Intent-based leads
    • Personalized outreach
    • Appointment setting
    • Product market research
    • Sales process guidance
    • Revenue growth plan

    NOTEWORTHY CLIENTS

    • Undisclosed

    WHY CHOOSE THEM?

    Lunas will guide your business through the tried-and-true stages of creating and keeping a recurring income, whether you need advisors to set you on the right path, sales training to strengthen your staff, or outsourced sales gurus to start generating leads.

    They’ll help you figure out how to scale up and maximize revenue by copying their sales techniques.

    Furthermore, they can assist you in designing a go-to-market plan for any area you wish to enter or grow into, regardless of where you are in your startup’s client acquisition process. They also give an in-depth analysis of the market and a detailed plan for outbound sales.

    Homepage - Lunas
    Source: Lunas

    8. SALESDOCk

    SALESDOCk Logo

    SALESDOCk

    Prague, Czechia

    Our Score

    4.9

     

    AGENCY SNAPSHOT

    Founded: 2016

    Location: Prague, Czech

    Number of employees: 11 – 50

    KEY SERVICES

    • Interim management & consulting
    • Sales boost & product market fit
    • Sales tech & analytics
    • Sales audit

    NOTEWORTHY CLIENTS

    • Microsoft
    • CloudTalk
    • Yieldigo
    • Trask

    WHY CHOOSE THEM?

    SALESDOCk is a B2B agency that focuses on sales metrics and processes.

    It helps sales departments move forward by taking a hands-on approach and having expertise in sales technologies. In addition, it teaches companies how to use tools to automate, measure, and predict sales, find and prospect for the best customers, turn opportunities into business, and do a lot more.

    It doesn’t just tell people how to sell, either. SALESDOCk likes to challenge its clients to reach out to prospects, build opportunities, close deals, and have fun along the way.

    Homepage - SALESDOCk
    Source: SALESDOCk

    9. Leadium

    Leadium Logo

    Leadium

    Las Vegas, USA

    Our Score

    4.8

    AGENCY SNAPSHOT

    Founded: 2017

    Location: Las Vegas, Nevada, USA

    Number of employees: 51 – 200

    KEY SERVICES

    • Lead generation
    • Database enrichment
    • Appointment setting
    • Outbound SDR services

    NOTEWORTHY CLIENTS

    • Humanity
    • Rydoo
    • OneHope
    • Segment

    WHY CHOOSE THEM?

    Leadium is a top B2B sales engagement company that works with mission-driven growth companies to create successful sales pipelines.  They can plan, build, and run your lead generation programs by combining their award-winning agency with a fully dedicated Sales Development Team.

    In the same way, their main business is sales, and when they work with their clients, they become a flexible, low-cost, high-yield team that focuses on outbound prospecting (SQLs), inbound lead flow (MQLs), CRM data integrity, and more.

    With offices in the US, the Dominican Republic, and Eastern Europe, they are a talented group of people from all over the world who work hard every month to find the right customers for their clients.

    Homepage - Leadium
    Source: Leadium

    10. Bandalier

    bandalier logo

    Bandalier

    Binghamton, USA

    Our Score

    4.8

     

    AGENCY SNAPSHOT

    Founded: 2017

    Location: Binghamton, New York, USA

    Number of employees: 51 – 200

    KEY SERVICES

    • Customer service Outsourcing
    • SDR Outsourcing
    • BDR Outsourcing

    NOTEWORTHY CLIENTS

    • Mighty
    • Hearst
    • BlockFi
    • Aaptiv
    • Movoto

    WHY CHOOSE THEM?

    Bandalier facilitates connections between organizations and exceptional individuals residing in a variety of locations around the United States. They focus particularly on small towns and villages, utilizing the often untapped potential of less industrialized areas.

    In addition, they recruit, train, and provide high-performing SDRs and customer support teams to assist rising enterprises in scaling even more quickly.

     

    Homepage - Bandalier
    Source: Bandalier

    Outsourced vs. In-House SDRs

    Time Savings

    According to Hubspot, the average tenure for an in-house SDR is only 18 months, meaning you’ll need to hire and onboard new sales reps several times a year if you have an in-house team.

    Doing this will divert resources and time from other aspects of running your business, as you’ll need to:

    • Post and market the job opening and sometimes engage in recruiting services
    • Screen and interview candidates
    • Train and onboard your sales reps

    Hiring an SDR company will significantly save you time and energy.

    Infographic of Differences between outsourced SDRs and in-house SDRs

    Cost Savings

    Hiring and training costs can quickly add up, especially with the sales industry’s high turnover rate.

    Salary and benefits are next. The United States Bureau of Labor Statistics found that employer costs for employee benefits are upwards of 30% of the base salary. This means the total amount you can expect to spend on a single SDR per year is around $100,000.

    In contrast, when outsourcing an SDR through a third-party company, the average cost for a single sales rep is $2,490 per month or $30,000 per year. Substantially lower than hiring in-house reps. Let’s also not forget the additional support cost.

    If you want to learn more about the difference, check out this video by SalesNash.

    Reasons to Keep Sales Efforts In-house

    On the other hand, recognizing and mitigating potential outsourcing challenges is important if you decide to proceed.

    • Control of sales development process, company intellectual property, customer data, and hardware
    • Communications and alignment with your customer messaging, pricing models, and marketing strategies due to likely less ongoing training
    • Cultural differences, whether it is company culture or even business culture, should you go for all remote work, or even an offshore SDR for further savings

    How to Choose the Right Outsourced Company and How to Measure Them

    In order to understand which outsourcing service is the right one for your business, you need to know what exactly you’re looking for.

    The size, budget, and goals of your company are all deeply important when it comes to choosing a third-party sales rep company.

    infographic of Break down of costs associated with outsourced SDRs vs. in-house SDRs
    Source: SalesBread

    But, once you’ve got all that figured out, there are other factors that need to be considered before you hire one:

    • What are their prices compared to other SDR companies?
    • What do they promise (in terms of turnover and communication)?
    • How extensive are their services?
    • How do they track progress?
    • Do they offer several packages to meet their client’s needs?

    Ways to track and measure an outsourced sales service include sales performance KPIs for:

    • The number of emails sent per week/month
    • Open rates
    • Reply rates
    • Call screening
    • Sales
    • Their conversion rate for every step in the funnel

    A good service will be transparent and give you access to the data/reporting you need to keep track of their progress and the results they’re driving for your business.

    Of course, the best kind is the one that meets your needs at the best price.

    Conclusion

    Outsourcing to an SDR firm is a low-cost option for businesses that don’t have the resources to recruit, hire, and train their own sales reps or don’t need a full sales team all year long.

    Moreover, studies have shown that your company can save a lot of money if you hire a reputable service instead of doing it in-house.

    So, if you want to grow your business and increase sales, an SDR-as-a-service company might be just what you need!

    Frequently Asked Questions

    What is an Outsourced Sales Development Representative?

    It is a low-cost choice for businesses that cannot afford high caliber in-house sales reps or do not require an entire sales team year-round. The outsourced SDR company provides sales reps for a fixed price each month and aims to provide you with leads and increased sales. They train their reps and you get access to a team of experienced sales people without having to find and hire them yourself, and without having to take on new employees. This means you can scale up (or down) as quickly and easily as you need to. Read the full guide for more on the advantages of using an outsourced SDR company.

    How much does it cost to hire an in-house SDR?

    The average cost per in-house SDR recruit in 2025 ranged from $6,000 to $10,000, which is rather costly considering that many SDRs are recent college grads who need extensive training and support before being productive. Additionally, they are likely to leave the company within their first year. Outsourcing to an outsourced SDR company is more cost effective and a lot less admin. Check out the full guide for the best outsourced SDR companies to consider.

    What is the difference between outsourced and in-house SDRs?

    In-house sales reps require a company find, interview, hire and train before they can begin to work. Contrastingly, sales outsourcing, run through a third-party company, are reps hired and managed by a different company, who you engage to do all or some of your sales development. Outsource services focus solely on providing high-quality sales development for their clients, which frees you up to focus on developing your business instead.

    References

    Hubspot: The Biggest Threat to Sales Teams in 2021 Isn’t Losing Clients

    FullFunnelWhy An Outsourced SDR is Cost Effective

    United States Bureau of Labor Statistics: News release

    TaskDrive: How Much Your SDRs Cost You