10 Best SDR Outsourcing Companies in 2025

Here’s a scene: your business is fast-growing and needs to scale to meet the demands. So you think, “Let’s hire more sales development representatives.” While that’s a good choice, it’s not the best decision in terms of cost efficiency and expertise. You have to offer salaries, provide benefits, pay for tools, and train them. 

Instead of going through this process, why not outsource an SDR service? In a Tenbound Survey, about 79% of companies outsource their SDR services to an agency, with 26% of them citing overhead cost as a major reason. You can hire an external company to handle every aspect of sales activities (from lead sourcing to engagement) and scale operations. 

In this article, we share our top 10 choices for SDR outsourcing companies, breaking down the roles they perform. We will also guide you through how to choose the right company, vet potential customers, and avoid common pitfalls when working with one. Let’s get started. 

When does it make sense to hire an SDR outsourcing company?

If you’re unsure of outsourcing your SDR service, you’re not alone. Here are common scenarios where outsourcing SDR service is a strategic move:

1. Startups scaling fast

When your business witnesses rapid growth, the need for more manpower arises. Rather than hiring and training new staff, outsourcing your sales operations is a better option to scale your sales efforts. An outsourced SDR service already has the expertise to effectively handle your sales activities while you focus on more crucial business matters. 

2. Companies breaking into new markets

Imagine a Japanese company trying to enter the American market; they would need an expert who already understands the territory. The same approach applies to any company that intends to enter a new market. 

Established SDR companies have already figured out what works. They have a deep knowledge of the local market, understand the cultural nuances, and recognize which messaging resonates with your target audience. Hiring this experienced sales team enables you to establish a firm foundation and gain new traction in the new market. 

3. Teams needing specialized outbound expertise

If you don’t have the expertise to utilize tools or implement the right strategies, chances are you would listen to what your in-house says. The danger with that is you don’t know what is right or wrong, which could make you waste time and resources. 

However, an outsourced team already has the expertise. Whether you want them to do the job or partner with your team, they can serve as a compass to help land your ship safely. So, be assured and focus more on other business matters that require prompt attention.

10 best SDR outsourcing companies

We’ll walk you through each company shortly, but first, here’s a simple table to give you the big picture:

Now that you’ve got the big picture, let’s dive into the details, starting with our top pick, ColdIQ. If you’re looking for a tech-savvy, hands-on partner that actually builds systems (not just sends emails), this one’s worth a closer look.

1. ColdIQ 

Outsourcing your SDR service? ColdIQ is your best shot. Whether you have a lean GTM team, lack the expertise to scale fast, or want to break into a new market, we are here to help. Our highly experienced sales professionals serve as an extension of your sales team, building scalable outbound systems to streamline sales processes and generate leads consistently. 

We are not just a typical SDR company; we use AI sales tools to manage every aspect of your sales prospecting activities, from audience research to email infrastructure setup, so you can focus on what matters — closing deals. 

So, if you find it challenging to build complex Clay tables for enrichment, craft resonating messages, or have your cold emails land in your prospect’s inbox, our sales experts make this history.

On top of this, we offer consultation services on how to improve your sales process and drive more leads. We become your eyes and ears to ensure you make sound decisions during your outbound campaigns.   

What ColdIQ does differently

While most SDR vendors send emails, we build outbound infrastructure from scratch and run the entire process for you. From targeting to copywriting, from data scraping to email warmup, we handle it all.

Here’s how ColdIQ helps you win:

• Audience research → Pinpoints high-fit buyers based on your ICP, tech stack, behavior, and buying signals.
• Lead scraping + enrichment → Uses AI tools like Clay, Apollo, and PhantomBuster to build laser-targeted lead lists.
• Email infrastructure setup → Builds, warms, and manages multiple sending accounts to ensure high deliverability.
• AI-driven copywriting → Crafts deeply personalized cold emails using tested messaging frameworks and AI tools.
• Reply handling + booking → Filters replies and books meetings directly to your calendar.
• Sales process consulting → Advises you on what’s working, what’s broken, and how to scale smarter.
• Outreach tech stack management → Clay, Instantly, Lemlist, Apollo, Smartlead → Runs the tech so you don’t have to.

Why founders choose ColdIQ

You're not just hiring another agency. You're partnering with operators who’ve built real sales engines and speak your language:

• Just fast implementation and results.
• Set up and launch within days, not months.
• Perfect for technical founders or small sales teams.
• 100% focus on qualified pipeline, not vanity metrics.

Here’s what customers say:

"We collaborated with ColdIQ on a few client campaigns and were always satisfied with the results. Looking forward to working together again!" — Endri, E. 

"ColdIQ- we had more leads in the past week than in the last 6 months. We worked with many sales coaches, and they're one of the rare greats." —- Philip, S.

How Design Pickle 2X’ed demos in 14 days with ColdIQ (Case study)

Design Pickle had the right tools — Clay, Apollo, HubSpot — but outreach felt manual, slow, and costly. Their sales team was lean, and demo volume was low. Paid ads were eating up the budget with little return.

“Before ColdIQ, we had a few demos booked a week,” — Bill Rose, Outbound Growth Lead at Design Pickle

We stepped in to engineer their outbound from scratch: tools, systems, and messaging.

Before working with ColdIQ, Design Pickle had several key sales tools in place — but they weren’t being used to their full potential:

• Clay was only used for basic list-building. After partnering with ColdIQ, they implemented automated lead enrichment and scoring logic, which helped qualify leads at scale and save hours of manual work.
• Apollo was mainly used for manual outreach. ColdIQ stepped in to design personalized sequences and fix deliverability issues, which led to significantly higher open and reply rates.
• HubSpot served only as a CRM. ColdIQ integrated it with Apollo and Clay, syncing data across the stack to provide real-time visibility into pipeline health and performance.
• Vector wasn’t being used at all. ColdIQ introduced it to deanonymize web traffic, allowing the team to identify and engage high-intent visitors they previously had no visibility into.

The results (in just 2 weeks):

Design Pickle doubled down with ColdIQ, investing in a long-term partnership to continue scaling. We’re now helping them optimize every part of their sales engine — from enrichment to messaging to AE capacity.

Want similar results?

If you’re:

• Booking under 10 demos per week
• Relying on ads to drive pipeline
• Sitting on Clay, Apollo, or HubSpot without real ROI

Let’s change that. We’ve built outbound systems that deliver 3–5X more demos in just 30–45 days.

Book your free GTM Strategy Call and get a tailored plan based on what’s working right now in outbound sales.

2. CIENCE

If you think building an in-house sales team is expensive and time-consuming, CIENCE is another company where you can outsource your SDR services. Combining human expertise with AI technology, CIENCE operates a five-pronged approach to create a scalable and efficient outreach process that drives qualified leads into your pipeline. 

From audience research to lead qualification, lead engagement to nurturing, and appointment scheduling, CIENCE leverages sales prospecting techniques to perform various operations for its customers. 

Additionally, they assist businesses of all sizes, from startups to enterprises, across various industries in creating outbound campaigns and generating consistent lead flow. On top of this, CIENCE is renowned for its multi-channel outreach, combining phone, social channels, and emails to drive engagement for its clients. 

CIENCE stands out for its cost-per-lead pricing model, where you pay for each lead generated for your business. The only downside to this model is prioritizing quantity over quality, as you get a high volume of leads that aren’t a good fit for your business. 

Use cases:

• Outbound sales operations: Perfect if you don’t have an internal SDR team and want experts to handle your sales operations. 
• Lead generation: Drives qualified leads for businesses of all sizes, from startups to enterprises. 

Customer review:

“There is no disconnect between Sales teams and their Growth teams. Sales was articulate in helping to prescribe a solution. We sought them out for a different solution that would have cost us more and made them more money. But they understood the problem to solve and prescribed a solution that meets the objectives.” —- Jeff, M. on  G2. 

Pricing:

Contact the sales team for a quote. 

3. Martal Group

Next on the list is Martal Group. With 15 years of experience, the reputable B2B lead generation agency offers SDR outsourcing services to businesses of all sizes, whether startups or large enterprises, across numerous industries. 

Its highly experienced SDR team can serve as an extension of your internal sales team, performing various sales operations such as building lead lists, curating outreach campaigns, scheduling appointments, and closing deals. You can leverage this to break into a new market, scale operations, and drive more opportunities. 

Martal Group stands out for its global reach. If you’re an international company trying to break into the North American market or any other region, the company’s diverse SDR team can help accomplish this goal. 

Use cases:

• Ideal for companies that want to expand sales without hiring or managing an in-house team. 
• Perfect for startups that want to enter new verticals or geographies. 

Customer review:

“They hold weekly meetings and provide regular updates. Their team is excellent and feels like an extension of our own—they’re genuinely invested in helping us grow, not just ticking a box.” — Lucas, T. on G2. 

Pricing:

Request pricing from the sales team.  

Also read: The Ultimate Guide to Using AI Sales Lead Generation

4. Belkins

If you’re wondering where to find companies that save your internal team time and stress, Belkins is a perfect choice. The B2B lead generation company executes a five-step approach to fill your pipeline with leads consistently. 

From figuring out your ideal market to aligning teams (yours and theirs), launching email campaigns to tracking performance, and booking appointments, the SDR outsourcing company handles all your outbound sales process so you can focus on closing deals. 

What sets Belkins apart is its omnichannel engagement that guarantees high-volume leads that fit your ideal customer profile (ICP). They combine email, LinkedIn, and phone calls to reach your potential buyers at the right time. 

Use cases:

• Companies that have no internal SDRs can leverage Belkins to perform their sales operations. 
• Companies that have an existing internal team can reach out to Belkins for extra support. 
• Belkins is also perfect for setting up outbound campaigns to break into new markets.

Customer reviews:

“They've taken the time to understand our business and tailored their approach to fit our needs." — Shane M. on Clutch. 

“We were most impressed by Belkins' consistent delivery of high-quality leads and proactive approach to understanding and meeting our specific business needs.” — Rob, D. on Clutch.

Pricing:

Contact the sales team for a quote.

5. SalesRoads

With over 17 years of experience, SalesRoads is another company dominating the SDR outsourcing space. Similar to many other companies, they handle every aspect of building your pipeline — sourcing and qualifying leads, building and nurturing relationships — so you can focus on closing deals. 

What sets this company apart from others is its fractional SDR approach that leverages AI-driven calling to grow your pipeline. Besides, they offer SDR training where they invite your team into a role-play before engaging in live sessions. This method helps to improve your sales team’s communication skills during sales conversations. Overall, SalesRoads is a company that generates qualified appointments for your business. 

Use cases:

• Perfect for finding a dedicated SDR team for your sales operations. 
• Great for expanding your business or entering new markets
• Ideal for handling complex sales channels in sensitive industries. 

Customer reviews:

"It is clear that SalesRoads is always trying to find new ways to increase efficiencies and exceed targets.” — Ryan, M. on Clutch. 

“SalesRoads is a provider in our network that executes specific B2B sales campaigns for their clients. We work with them on several projects that have grown and renewed based on consistent delivery of leads.” — Amir, R. on G2.

Pricing:

SalesRoad’s fractional SDR service costs $6,950 per month, while its full SDR service costs $9,500 monthly.

6. CloudTask

If you want to work with a direct service provider rather than a traditional agency, CloudTask is an ideal choice. Think of it as the “Upwork” of B2B sales services. It’s a global marketplace where you can hire an expert to handle your sales operations.

The marketplace offers a wide range of vendors, so you can compare options, negotiate terms, and choose the solution that fits you best. All you need to do is search for salespeople and filter your results based on criteria such as business tasks, challenges, industry experience, and more. It’s ideal for companies that want to have more control over their outsourcing decisions, rather than relying on a single provider. 

CloudTask stands out for its diversity and global reach. With many vendors on the platform, you can find a salesperson who speaks your language, works in your time zone, and fits your exact needs. 

Use cases:

• Ideal for expanding into international markets due to diverse sales reps who offer multilingual support.
• Perfect for hiring an external SDR fast.
• Great for running short-term SDR campaigns before scaling operations. 

Customer reviews:

“A game-changer in sales development with exceptional service.” — Shane, M. on G2. 

Pricing:

The pricing model isn’t fixed. It varies based on vendors. 

7. Leadium

Leadium is a perfect choice for doing the heavy lifting of finding prospects, engaging them, and setting qualified meetings. The B2B lead generation company works with you to create a scalable sales system that generates qualified leads for your business. 

With its unique appointment setting campaigns, they can craft highly-personalized interactions across multiple channels (phone, email, and LinkedIn) to build relationships and close deals. Leadium stands out for its data-first approach, which it combines with human intelligence to deliver a resonating outreach. 

Use cases:

• Scalable lead generation without overhead costs
• Perfect for growing businesses that need predictable pipeline generation. 

Customer review:

"Working with Leadium was an eye-opener for us; their synergy with our team was outstanding." — Jonas, T. on Clutch. 

Pricing:

Contact the sales team for a quote. 

8. memoryBlue

memoryBlue is another company that offers outsourced SDR services for businesses. They hire and train SDRs in their academy to handle sales operations for various businesses. Similar to many companies, their SDRs leverage AI and other automation tools to launch campaigns on multiple channels (emails, LinkedIn, and phone calls), identifying and engaging potential buyers.  

memoryBlue stands out for its two pricing models — fixed rate and pay-per-performance — which offer businesses different options to choose from. This further allows them to have a service tailored to their budget.

Use cases:

• Perfect for early-stage companies that don't have an existing SDR team.
• Suitable for tech companies that want to grow their pipeline fast. 

Customer review:

“The quality and readiness of the reps, combined with memoryBlue’s structured vetting and training process. The reps we hired are already contributing to pipeline goals and show strong potential for long-term growth.” – Desiree, B. on G2. 

Pricing:

Contact the sales team for a quote.

Also read: How to Leverage AI for Sales Prospecting: The Ultimate Guide

9. Vendition (apprenticeship + SDRs)

Vendition combines its apprenticeship program with its outsourced SDR service. Here is how they work: they train individuals from scratch and have the candidates work for you as SDRs for three months as apprentices. 

What this offers is a chance to work with entry-level talents who have high potential. Besides, you don’t have to commit to a full-time hire. You see the SDR in action during the apprenticeship program and decide whether you want to work with them. The only downside to this is that you could end up with less experienced individuals who may not deliver great results. 

Use cases:

• Perfect for a company that wants to hire SDRs without recruiting or training one. 
• Suitable if you want a more diverse sales team. 

Customer reviews:

N/A

Pricing:

Contact the sales team for a quote.

10. EBQ

Our final option on the list is EBQ. The specialized outsourced sales company provides some SDR reps, a project manager, and revenue consultants to handle your sales operations (lead sourcing and qualification, cold calling, appointment setting) without making a full-time hire.

Their flat monthly fee sets them apart from other companies. You don’t have to commit to long contracts or high exit fees as you scale your business. 

Use cases:

• Suitable for companies without in-house teams. 
• Ideal for businesses that need high-volume, cold calling services. 

Customer reviews:

“With their strategic practices, they have implemented a more evolving marketing with a more defined focus. Objectives have been accelerated and have been reached more easily.” — Willis, H. on G2. 

Pricing:

Expect to pay $5,000 per month for a half-time employee and $10,000 per month for a full-time one.

How to choose the right SDR outsourcing partner

If you want to find the right SDR outsourcing partner for your business, here are some factors to consider.

1. Key criteria

While it’s no secret that many companies outsource lead generation, choosing the right partner is crucial to success. Here are a few factors to help narrow down your selection.

• Industry experience: The right SDR outsourcing partner must have the right skillset and deep industry knowledge to perform their job effectively. Consider looking at the company’s age or the average years of experience their sales reps have to determine if they are the right fit for the job.
• Tech stack integration: Consider an SDR outsourced service whose tech stack integrates seamlessly with your company’s for easy data transfer and streamlined workflow. This approach allows both teams to collaborate on projects, track performance, and ensure alignment of strategies on both sides. 
• Data quality: Look for a company that offers quality data that connects you with real prospects who are ready to buy. This ensures you’re not paying for wasted efforts. Besides, bad data means you’re likely violating regulations like GDPR or CCPA, which could attract serious legal sanctions. Hence, working with a service that offers quality data will not only connect you to prospects but also prevent legal sanctions.
• Cultural fit: When prospects sense that you don’t get their market dynamics or communication style, chances are you may not connect with them. Hiring an SDR outsourcing company that understands the cultural context of your target market helps to builda  genuine relationships faster. When your prospects feel understood and heard, they’re more likely to book meetings with you. 

2. Questions to ask during the vetting process

Hiring an SDR outsourcing company is similar to hiring a specialist who knows the playbook and enhances the process. After all, they would work with your in-house team. So, questioning them only feels right. Here are some questions to ask during the vetting process: 

• Where is your SDR team located, and what’s their experience level?
• Do you have experience in our target market?
• Can I speak to the actual SDR who would be managing my account?
• What industries or company sizes do you typically work with?
• How do you research and build lead lists?
• What’s your approach to messaging and personalization?
• What sales tools and CRM systems do you use?
• Do you have experience with [specific tool your business uses]?
• How do you define campaign success? What metrics do you track?
• Can you share case studies from similar companies in my industry?
• How do you handle feedback?
• What’s your pricing model, and what does it include?

3. Pitfalls to avoid when outsourcing SDR work

Once you’re done questioning the outsourcing company, watch out for some of these pitfalls:

• Unclear or misaligned goals: If they focus on vanity metrics such as “number of emails sent” instead of outcomes like “qualified meetings booked,” you may want to reconsider your decision. An outsourcing company that doesn’t align with your definition of success may not be your best option. Make sure the company you’re choosing agrees with your goals and expectations to avoid ruining relationships.

• Cost over quality: Just because they are affordable doesn’t mean they can deliver a service that’s tailored to your needs. In fact, a budget-friendly option could backfire in the long run, letting you miss out on potential sales opportunities. 

• Neglecting communication: Poor or delayed communication leads to misunderstanding between the parties. If you detect signs early, it’s best to avoid them to prevent hurtful relationships. 

Conclusion

There you have it. The 10 best SDR outsourcing companies you can consider for your business. Before selecting a company, take your time to research thoroughly to ensure you’re on the same page. Be open about your goals, expectations, and make sure they agree with your definition of success.

That said, ColdIQ remains the best SDR outsourcing company to partner with. We have the experience and provide practical guidance for your outbound campaign operations. Book a GTM Strategy Call with us today!

Frequently asked questions about SDR outsourcing companies.

1. What Is SDR Outsourcing?

SDR outsourcing involves contracting with an external service provider to handle the sales development representative (SDR) operations for your business. 

2. What Is an SDR Outsourcing Company?

An SDR outsourcing company is an external or third-party company that handles sales operations like lead generation and nurturing on behalf of a specific business. 

3. How much does it cost to outsource?

Outsourcing cost varies based on different factors such as the vendor, their location, pricing models, and the complexities of the project. A monthly retainer fee can range between $6,000 - $10,000 per month. 

4. Is SDR outsourcing effective for startups?

Yes, SDR outsourcing is effective for startups in terms of cost, access to specialized expertise, and scalability. 

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