Top 10 Outsourced SDR Agencies to Scale Growth

By: Jack Reamer |
 May 14, 2024 |

Choosing the right SDR service can vastly improve your business growth; In fact, some stats show that SDR teams can generate 30–45% of new business revenue for business organizations.

If your company is looking for an outsourced SDR service to help you scale your sales this year, then you have come to the right place.

In this article, we will share 10 of the best SDR agencies to work with.

( If you’re interested in working with a sales outsourcing company where you can expect 1 qualified sales lead per day, why not hop on a free 15-minute strategy call with Salesbread? We would love to help you ramp up your sales.)

Top 10 SDR Agencies to reach out to

1. Salesbread


Salesbread is a B2B lead generation agency that specializes in ultra-personalized LinkedIn and cold email outreach.

Since 2019, SalesBread clients have averaged a 19.98% reply rate and 48.14% of those replies were either meeting requests or qualified sales inquiries on their product or service.

Our clients know that when they partner up with us, they can expect 1 qualified sales lead per day.

With over a decade of lead generation and copywriting experience, Jack Reamer, the founder of Salesbread, works along with each and every client. You won’t get handed over to an account manager who might lack the experience to get you sales qualified leads.

Salesbread essentially builds “lead funnels” (using LinkedIn and Email) that gets your ideal customers excited about your offer — even if you don’t have a large sales team or extra time to spend on prospecting.

At Salesbread we believe in low volume, high quality lead gen. This means that we would rather build an ultra-refined list of your ideal target audience, and send each person on that list ultra-personalized well written LinkedIn and cold email messages.

We would rather reach out to 500 prospects who say “yes” to a booked meeting than 2000 prospects who might not be an ideal fit for your product/service.

Our lead generation process

Step 1: Build a list of your ideal customers

We will first ask you WHO has purchased your product or service within the last 6 months. This data will help us look for patterns between your buying customers.

For example:

Do your current buying customers have the following similarities:

  • Are they all located in the same industries? Fintech, tech, SaaS, health and wellness?

  • Where are your buying customers located? In the US? Germany? 10 miles from Florida?

  • How big are these companies? More than 500 employees or less?

  • Have they recently been funded?

  • Do they spend money on social media marketing or SEO?

  • Do they use the same CRM tools? Like HubSpot or Salesforce?

  • Did they recently suffer a huge PR issue?

  • Who are the decision-makers? The CFO? Marketing manager?

When we start looking at patterns between your current buying prospects it helps us create look-a-like lists of accounts to target.

This list-building process usually takes us a week to perfect, and we use various tools to help us build these lists. We actually go off LinkedIn Sales Navigator and use 3rd party data providers, such as:

  • Bombora

  • Crunchbase

  • ZoomInfo

Step 2: Find the right people at these accounts

Next, we narrow down this list even further and find the right decision-makers to reach out to on LinkedIn. We will filter this list by your 2nd degree network.


Stats have shown that if someone is already in your 2nd-degree network, they will be more likely to accept your connection request.

The reason? They have already accepted someone like you in the past, so the chances of them accepting your connection request will be greater.

We also filter this list by “posted on LinkedIn in the past 30 days.”

The reason for this is that it helps us reach out to prospects who are active on the platform.

There’s no point in sending connection requests to individuals who aren’t actively using Linkedin. We would rather add these prospects to a cold email or SMS campaign.

Once this list is perfect, and everyone on the list has been double-checked by one of our SDRs, we will then move on to the next step.

Step 3: Write personalized connection request messages

Next, we will have our personalization expert research each and every prospect on the list. We do this in order to find something very specific to mention about the prospect in our connection request.

We use a method called CCQ to help us write our messages. CCQ stands for:

  • Compliment

  • Commonalities

  • Questions

So we will either find something to compliment the prospect on, mention a commonality, or ask them a question.

Here are some examples:

1. Hey {{Name}}, since we’re both working in {{commercial real estate}} here in {{San Diego}}, I’d like to invite you to share my network here on LI.

2. {{Name}}, I’m looking to connect with like-minded professionals who are on the {{revenue-generating}} side of things. Let’s connect?

3. Hi {{Name}}, I’m looking to expand my network with fellow business owners in the {{HR Tech}} industry. Looking forward to learning more about what you do and see if there’s any way we can support each other.

4. Hi (Name) LinkedIn showed me your profile multiple times now, so I checked what you do. I really like your {{sales posts}} and would like to connect with you here.

5. Hey (Name) I hope your week is off to a great start, since we both work in the {{HR/Employee Experience}} field together, are you open to connecting?(My background is in employee retention, happy to share insights anytime.)

Do these personalized messages work?

See some of the replies we have received.

Step 4: Follow up consistently and ask for a booked meeting

Next, our salesperson will follow up with the prospects between 3 – 7 times.

We do this every 3 days (This article: The Perfect Outreach Cadence For B2B Sales, explains why.)

You will also notice that our call to action revolves around asking for a quick meeting.

Here are some examples:

Can we target {{=bday+2}} afternoon to discuss [BENEFIT/PROBLEM]?

What’s the best way to schedule 5 minutes to talk?

Would you have some time next {{=day}} to discuss?

If you find the spec interesting, should we set up a confidential chat?

Can we grab a time Thursday afternoon to see if [MY COMPANY] aligns with your goals for this year?

Are you available for a quick meeting to discuss your use case and see if we can assist in any way?

Pros and cons


  • Ultra refined list building

  • Personalized messaging

  • Multi-channel lead generation

  • You work directly with the founder of Salesbread

  • No locked-in contracts


  • We usually have a 3-week waiting list (We only take on a few clients at time, to ensure the best service.)

  • We don’t sell booked appointments

  • Salesbread doesn’t do cold calling

Our Pricing

You can expect to pay between $1500 – $5000, depending on whether you choose our done-for-you lead generation service or a consult.

This pricing is still less than hiring a full-time sales rep.


Interested in working with Salesbread?

Book a free 15-minute consult here.

2. Salesroads


Salesroads is an American-based SDR outsourcing company that was founded in 2006. They help industrial companies grow by providing appointment Setting and SDR Outsourcing Services.

The founder of Salesroads, David Kreiger, initially had an idea for a completely remote organization that would employ military spouses.

This was just the first step in their path towards building their company. They have helped 430 companies reach their sales potential, creating more than 50,000 new opportunities for their partners

Pros and Cons


  • Founded in 2006

  • Their SDRs have 7 years of experience

  • US-based SDRS


  • They can be pricey

  • They are a large company, which means you might miss out on a more personalized experience

  • 3 month locked in contract, then month to month


Their pricing starts at $ 10,000 per month.


3. Martal Group


Martal Group is a lead generation and sales agency that specializes in helping B2B companies. They enhance your in-house sales team with professional sales executives, catering lead generation, and sales services across 50+ verticals.

Their managed sales team builds a strategy for your business that drives prospect engagement with multiple personalized sales touches. They use both inbound and outbound marketing methods to find new clients for you.

Pros and Cons


  • They use both inbound and outbound methods

  • 15 years in the industry

  • internationally based SDRs


  • They can be pricey


According to, Martal Group’s pricing for lead generation ranges from $2,000–$40,000 per month. This is higher than many other agencies. The Martal Group’s pay-as-you-go option starts at $300 per campaign, and their basic managed service pricing starts at $3,000 per month



4. Cience Technologies


Cience Technologies offers b2b sales outsourcing with a collection of seasoned outbound SDR professionals to grow your sales pipeline.

Their outbound method begins with accurate data on target audiences to build expert prospect lists.

They also utilize a multichannel outreach approach. Cience was founded in 2015, and they have helped over 2500 clients over the years.

Pros and Cons


  • An international company

  • They have a number of years of experience

  • They offer a multichannel approach in their lead generation efforts.


  • Cience is a large company which means you might not get a personalized experience for your company.

  • Locked-in contracts for a minimum of 6 months

  • They have a few bad ratings on Clutch


Cience pricing starts at $2000 per month, but you would have to schedule a call to get an exact amount for your company. Research shows that you can expect to pay anything between $2000 – $9000 per month.


5. Leadium


Leadium is B2B lead generation agency that focuses on using analytical outbound campaigns to deliver revenue at a lower cost than traditional Sales Development Teams.

They do this by understanding prospects’ cognitive behavior and personality insights.

Their experienced research teams source and validate intent data that matches your ideal potential customers.

Pros and Cons


  • They use intent data to build lists for you

  • They offer appointment booking services

  • They are more affordable than other lead generation agencies


Their reporting tools aren’t as diligent as customers would like according to reviews.

No guarantees are offered.


Leadium’s pricing isn’t listed on their website but according to research you can expect to pay anything between $1,500–$10,000+ per month.


6. Belkins


Belkins was founded in 2017, and they value fostering personal and professional development. Their core values are honesty, growth, reliability, and quality.

Their results are as follows:

  • 1,000+ loyal customers with a 95% retention rate

  • 300k+ appointments scheduled

  • $10 return for every $1 invested

Pros and Cons


  • International company

  • They are reliable and organized

  • Belkins offers a variety of services from sales outsourcing to LinkedIn marketing.


In some cases, according to reviews, there weren’t as many meetings booked as promised.


Belkins doesn’t mention how much their pricing. You would need to contact them directly. But according to research you can expect to pay anything between $1000 – $5000+.

7. Cleverly


Cleverly offers sales outsourcing services, but they mainly focus on:

  • LinkedIn Advertising

  • Cold Email Outreach

  • White-label Lead Generation

  • LinkedIn Recruiting

  • Google Ads Management

Cleverly was founded in 2018, and they offer various pricing tiers to suit your budget.

Pros and Cons


  • Cleverly offers a variety of lead generation solutions

  • Their pricing is competitive and more affordable than other agencies


  • Some reviews have mentioned how their web portal isn’t the best and lags at times.

  • Some reviews also mentioned how Cleverly overpromised and under-performed.


Cleverly’s pricing ranges from between $397 – $891 per month, depending on which option you choose.


8. Memory Blue


Memory Blue is a provider of outsourced sales development services. Founded in 2002, Memory Blue offers a team of highly skilled professionals who specialize in driving revenue growth through strategic lead generation and pipeline management.

Pros and Cons


  • Memory Blue is an internationally based-sales company

  • They have years of experience

  • They offer a cutting-edge tech stack


  • Memory Blue is pretty pricey compared to other outsourced SDR agencies.


Their pricing ranges between $3500 – $ 11,000 + depending on which services you require.


9. Five Rings Marketing


Five Rings Marketing is an SDR outsourcing company that offers inbound and outbound lead generation. Founded in 2017, they mainly focus on helping smaller businesses find leads, with expertise in information technology, medical, manufacturing, and financial services.

Pros and Cons


  • They offer a variety of lead generation solutions, including sales outsourcing, pay-per-click, content marketing, and SEO.


  • Some reviews mention that the quality of their leads was low.


There is no pricing mentioned on their website, you would need to contact them for a tailored plan.


10. LevelUp Leads


LevelUp Leads is a B2B lead generation agency and a done-for-you lead generation service. They act as an extended part of your team to run various lead generation activities such as: outbound email, LinkedIn, or cold calling campaigns to generate more meetings for your business.

Their SDR teams lead your outbound strategy by sourcing relevant data, implementing their tech stack, copywriting, and managing your campaigns to create a pipeline and higher conversion rates.

Pros and Cons


  • They are a fully remote company that has SDR from all over the world.

  • The company was founded in 2021

  • They have worked with over 178 clients


  • You have to sign a minimum contract of 3 months

  • They are pretty pricey


They offer 3 pricing tiers that start at $4000 – $8000.


What are outsourced SDR services?

Outsourced SDR (Sales Development Representative) services involve hiring specialized companies, known as SDR companies or outsourced SDR companies, to handle initial sales processes on behalf of a company’s internal sales team. These services encompass tasks such as:

  • Prospecting

  • Lead generation

  • Qualifying leads

These tasks are crucial for feeding the sales funnel and generating high-quality leads and customers for your business.

What are the benefits of using outsourced SDR teams?

Hiring an outsourced SDR service offers many benefits. By partnering with SDR outsourcing companies, businesses can access expertise in sales development without the need for extensive hiring and training of internal sales representatives.

This approach can lead to increased efficiency and scalability, allowing companies to adjust their outbound sales outsourcing needs based on demand.

Additionally, outsourcing SDR services can result in cost savings and improved results, as companies benefit from the expertise and experience of dedicated SDRs focused on generating qualified leads and appointments with potential clients.

How to choose the right outsourced SDR service provider?

When choosing an outsourced SDR service provider or SDR company, you need to consider several factors.

Firstly, evaluate the provider’s track record and experience in sales development and lead generation strategies, especially within your industry.

Look for SDR companies that have a proven ability to deliver a consistent number of quality leads per month. Additionally, assess the provider’s approach to onboarding and training their SDRs, ensuring they align with your company’s sales processes and goals.

Read this article: 10 Questions To Ask Before Choosing A Cold Email Agency. This article will share some questions to ask an agency before hiring them.

Looking for an outsourced SDR agency that brings you 20+ qualified sales leads per month?

Then hop on a free 15-minute consultation with Salesbread. We have no locked-in contracts, and our results get our clients to stay.

We are known as the “1-lead-per-day” agency and this is what we deliver when you choose to work with us.