5 Popular Cold Email Agencies in 2025

Quick question:

Are you tired of spending hours writing cold emails that hardly get any replies?

One more question:

Wouldn’t it be better if there was a reliable partner to manage your outreach and actually deliver results?

If the answer is yes, then you’re in the right place.

In this blog, I’ll take you through everything you need to know about the top Cold Email Agencies in 2025—why they matter, what makes them effective, and how to pick the one that fits your business.

From their unique strengths to pricing details, I’ll make sure you get all the insights needed to make an informed decision.

And I know what you’re thinking:

“Why should I trust this information?”

Here’s why: I’ve been exactly where you are, struggling to get responses and wondering if there’s a better way.

Over time, I’ve analyzed and tested several Cold Email Agencies to uncover the ones that actually deliver.

Watch this video to uncover Salesforge CEO Frank Sondors' cold email secrets: 

So, let’s get started. This blog might just be the turning point for your email outreach!

Here’s what you’ll discover in this article:

• Why you need a Cold Email Agency in today’s competitive landscape.
• 5 critical factors to consider before making a choice.
• A detailed breakdown of the top Cold Email Agencies in 2025, including Agent Frank from Salesforge, Belkins, Cleverly, Growth.cx, and CleverViral.
• Actionable tips to select the best agency for your specific needs.

Ready to explore? Let’s dive in!

TL;DR: 

Choosing the right Cold Email Agency can significantly impact your outreach results.

Whether you’re aiming to scale your campaigns, connect with the right audience, or boost deliverability, it’s essential to pick an agency that aligns with your specific goals.

Here’s a quick look at the top options to consider:

• Agent Frank (Salesforge): Combines AI-driven personalization with scalable campaigns, starting at $499/month. A great choice for businesses that want automation with a human touch.

• Belkins: Offers expert lead generation and omnichannel strategies, best suited for larger companies with custom needs.

• Cleverly: Focuses on LinkedIn outreach with AI-powered messaging, making it ideal for businesses targeting professionals.

• Growth.cx: Tailored for SaaS and tech companies, delivering ROI-focused email campaigns for measurable growth.

• CleverViral: Delivers intent-based, personalized outreach, perfect for businesses aiming to build connections and expand their pipelines.

Each agency excels in different areas. Consider your goals, budget, and industry focus when making your choice.

For a balance of affordability, scalability, and effective results, Agent Frank by Salesforge stands out as a dependable option.

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Why Do You Need a Cold Email Agency?

Let’s face it: cold emailing isn’t as easy as it sounds. Writing the perfect email, finding the right prospects, and getting your emails delivered can be a massive challenge.

Even if you’re doing everything right, low response rates can leave you questioning if cold email is worth the effort.

Check out this video to learn how to send bulk emails without landing in spam:

That’s probably why you’re here—you’re looking for a solution that makes outreach easier, faster, and more effective. 

A Cold Email Agency does exactly that.

By using specialized expertise and tools, they can take the burden off your shoulders and give your email campaigns the professional edge they need to succeed.

Here’s how a Cold Email Agency can help:

• Expertly Crafted Email Sequences

A good agency doesn’t just send emails—they design sequences tailored to your audience.

This includes personalized messaging that speaks directly to your prospects’ pain points, ensuring higher engagement.

• Access to Advanced Tools and Insights

Agencies often use the latest email tools and analytics platforms to optimize campaigns.

They monitor key metrics like open rates and reply rates, helping you stay ahead without dealing with technical complexities.

• Improved Email Deliverability

Struggling with your emails ending up in spam? Cold Email Agencies use tested methods like domain warming and list cleaning to ensure your messages land in the inbox.

• Scaling Outreach Effortlessly

Handling outreach manually is time-consuming. Agencies can scale your campaigns significantly—whether you need to target 100 prospects or 10,000—without compromising quality.

• Saving Time and Resources

Let’s be honest: your time is better spent closing deals, not managing campaigns.

Hiring a Cold Email Agency frees you up to focus on what matters most—your business.

By now, you can see how a Cold Email Agency can transform your outreach strategy and save you valuable time. 

But before you choose one, it’s crucial to understand the key factors that can make or break your decision.

Let’s dive into the key factors to consider when choosing the right agency for your business.

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5 Key Factors to Consider Before Choosing a Cold Email Agency

Choosing the right Cold Email Agency can feel overwhelming.

With so many options available, how do you ensure you’re making the right decision?

Maybe you’ve experimented with cold emailing and faced low response rates, or worked with agencies before and didn’t get the results you expected. 

Also Read: The Dos and Don'ts of Cold Email Outreach for Agencies

That’s why you’re here—to find an agency that truly delivers value without wasting your time or budget.

To help you narrow down your options, here are five critical factors to consider:

• Track Record and Case Studies

Choose an agency with proven success.

Look for case studies or testimonials showing how they’ve driven results for businesses similar to yours, whether it’s higher reply rates or better conversions.

• Customization and Personalization
  Avoid generic approaches. The right Cold Email Agency will create personalized sequences tailored to your audience, ensuring your emails resonate and drive engagement.

• Email Deliverability Expertise

An agency must focus on inbox placement. Check if they implement domain warming, email verification, and tools to improve deliverability and avoid spam filters.

• Transparent Pricing and Services

Clear pricing avoids surprises. Ensure you know what’s included—whether it’s per campaign, per lead, or a subscription model—to fit your budget.

• Scalability and Flexibility

Your needs may grow, and the agency should adapt. Choose one capable of handling both small niche campaigns and large-scale outreach efforts.

With these factors in mind, you’re one step closer to finding the perfect partner for your cold email outreach. Let’s now explore the most popular agencies making waves in 2025.

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Top 5 Popular Cold Email Agencies in 2025

Here are 5 popular Cold Email Agencies to enhance your outreach:

1. Agent Frank from Salesforge

2. Belkins

3. Cleverly

4. Growth.cx

5. CleverViral

Let’s explore what makes each of these agencies stand out.

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1. Agent Frank from Salesforge

Agent Frank by Salesforge is an innovative solution tailored for businesses looking to simplify and scale their cold email outreach.

It combines automation with personalization, helping companies achieve higher engagement without the need for extensive manual effort.

From unlimited contact management to advanced AI-driven features, Agent Frank is designed to deliver measurable results for businesses of all sizes.

Key Features of Agent Frank

• Auto-Pilot and Co-Pilot Modes: Allows you to choose between fully automated campaigns or collaborative control to match your workflow.

• Unlimited Contacts: No restrictions on the number of prospects you can target.

• Personalization at Scale: Craft tailored messages that connect with your audience while automating the tedious parts of email outreach.

• Advanced AI Capabilities: Uses AI to optimize email content and timing for better deliverability and engagement.

• Cost-Efficiency: Replace multiple tools with a single AI-powered solution, significantly reducing operational costs.

Agent Frank Pricing

• $499 per month: Includes all features like unlimited contacts and advanced personalization.

• Savings of up to 16x compared to traditional SDR setups, making it a cost-effective alternative for scaling outreach efforts.

Pros and Cons of Agent Frank

Pros:

• Simple and intuitive interface that’s easy to use.

• Highly effective personalization features powered by AI.

• Scalable outreach campaigns with unlimited contact limits.

• Affordable pricing compared to hiring full-time SDRs.

Cons:

• Limited integration options with some CRM tools.

• Requires initial setup time to tailor campaigns effectively.

Agent Frank Review

Agent Frank has received exceptional reviews across platforms:

• G2 Rating: 4.9/5
• Product Hunt Rating: 4.8/5y

Users highlight its ease of use, excellent customer support, and the ability to scale campaigns without compromising quality.

One user even stated, "Agent Frank has transformed my cold email strategy—what used to take hours is now done in minutes, with better results."

Summary of Agent Frank

Agent Frank stands out as a top-tier Cold Email Agency solution for businesses aiming to streamline and scale their outreach.

Its affordability, advanced AI features, and user-friendly design make it a must-try tool for anyone serious about cold emailing.

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2. Belkins

Belkins is a leading Cold Email Agency specializing in ROI-focused lead acquisition and appointment setting.

With a personalized approach to outreach and detailed lead research, Belkins helps businesses build a predictable sales channel.

Known for its tailored strategies and high-quality results, it’s a trusted partner for companies looking to streamline their sales funnel and close more deals.

Key Features of Belkins

• Omnichannel Appointment Setting: Offers personalized appointment-setting services, providing 200+ to 400+ appointments annually, depending on your plan.

• Lead Research: Delivers detailed lead profiles based on your target audience, ensuring high-quality prospects.

• Email Campaign Management: Fully manages email campaigns, including crafting content and optimizing for better engagement.

• Customized Outreach: Ensures every email is personalized to resonate with your potential clients.

• Sales Pipeline Optimization: Focuses on improving your sales funnel with expert insights and strategies.

Belkins Pricing

Belkins follows a customized pricing model tailored to your business needs.

Plans vary based on the number of appointments, lead research depth, and email campaign management services. You can request a quote directly from their website.

Pros and Cons of Belkins

Pros

• Highly targeted and customized outreach strategies.

• Proven track record of delivering consistent, high-quality leads.

• Comprehensive lead research and detailed prospect profiles.

Cons

• Pricing can be expensive for small businesses.

• Occasional miscommunication during campaign execution.

Belkins Review

Belkins has received impressive ratings for its services:

• G2 Rating: 4.8/5
• Trustradius Score: 9.9/10

Clients praise their hands-on approach, lead quality, and ability to streamline the sales funnel.

One review highlighted, “Belkins delivered more than just leads—they elevated our business game with tailored strategies and excellent communication.”

‍ However, a few users noted challenges with response rates and the high cost of services.

Summary of Belkins

Belkins stands out as a Cold Email Agency for businesses looking to generate consistent, high-quality leads.

Its focus on tailored outreach and omnichannel appointment setting makes it a reliable partner for scaling sales.

While it may not be the most budget-friendly option, its expertise and proven results make it a top choice for mid-to-large-sized businesses.

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3. Cleverly

Cleverly is a top Cold Email Agency specializing in LinkedIn lead generation and personalized email outreach.

With a data-driven approach, Cleverly automates outreach efforts, builds qualified lead lists, and secures meetings with your ideal clients.

It’s an excellent choice for businesses looking to scale their sales pipeline while maintaining high-quality connections.

Key Features of Cleverly

• Done-for-You Campaigns: Provides fully managed email campaigns, from creating outreach copy to optimizing results.

• AI-Powered Personalization: Uses advanced AI to craft tailored emails that resonate with your target audience.

• Lead Qualification: Builds qualified lead lists by identifying decision-makers within your target industries.

• Performance Tracking: Offers real-time insights into campaign metrics, making it easy to track success.

• One-on-One Support: Includes onboarding support, domain setup, and ongoing campaign optimization.

Also Read: 5 Most Popular Cold Email Infrastructure Tools For B2Bs [2024]

Cleverly Pricing

Cleverly follows a pay-per-meeting-ready-lead model, with pricing tailored to the number of leads and outreach volume.

Specific details are available upon request through their website.

Pros and Cons of Cleverly

Pros

• Effective lead generation tailored to specific industries.

• Strong campaign management support and AI-powered personalization.

• Comprehensive real-time performance tracking for transparency.

Cons

• Some users report issues with miscommunication during campaigns.

• Concerns around data security and execution reliability.

Cleverly Review

Cleverly has garnered positive ratings for its services:

• G2 Rating: 4.6/5
• Trustpilot Rating: 4.8/5

Clients appreciate its ability to automate LinkedIn connections and follow-ups, simplifying the lead generation process.

One user shared, “Cleverly made it easy to scale LinkedIn outreach and secure valuable meetings without lifting a finger.”

However, some reviews mention dissatisfaction with execution delays and security concerns, highlighting areas for improvement.

Summary of Cleverly

Cleverly is a reliable Cold Email Agency for businesses looking to scale their outreach on LinkedIn and email.

Its data-driven approach and managed campaigns make it an excellent fit for B2B companies.

While there are minor concerns around communication, its overall efficiency and results-driven services make it a strong contender in the space.

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4. Growth.cx

Growth.cx is a Cold Email Agency tailored for B2B SaaS and tech companies, focusing on ROI-driven outreach.

With personalized campaigns designed to connect with decision-makers, Growth.cx helps businesses book 10–15 high-quality meetings per month, making it an excellent choice for scaling outreach in competitive industries.

Key Features of Growth.cx

• ROI-Focused Campaigns: Helps businesses book 10–15 meetings per month with a focus on measurable results.

• Personalized Email Outreach: Creates high-converting, customized emails targeting decision-makers.

• Scalable Services: Designed to cater to both startups and established SaaS companies.

• Industry Expertise: Specializes in connecting with high-value leads in B2B SaaS and tech industries.

• Dedicated Strategists: Offers one-on-one consultation to align campaigns with business goals.

Growth.cx Pricing

Growth.cx follows a customized pricing model based on your specific outreach and lead generation needs.

Pricing details are available upon consultation, ensuring tailored solutions for your business.

Pros and Cons of Growth.cx

Pros

• Industry-specific expertise in B2B SaaS and tech.

• High ROI potential with personalized email campaigns.

• Provides dedicated support to optimize strategies.

Cons

• Pricing may not be transparent without consultation.

• Limited to SaaS and tech-focused businesses.

Growth.cx Review

Growth.cx has received positive feedback from clients, particularly for its ability to scale outreach campaigns and deliver consistent results.

Clients value its ROI-driven approach and personalized strategies, making it a trusted partner for B2B companies.

However, businesses outside SaaS and tech may find their services less relevant due to the niche focus.

Summary of Growth.cx

Growth.cx is a specialized Cold Email Agency that excels in helping B2B SaaS and tech companies scale their outreach and connect with decision-makers.

With a strong emphasis on ROI, personalized campaigns, and industry expertise, it’s an ideal choice for businesses in these sectors looking to drive growth through cold email outreach.

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5. CleverViral

CleverViral is a Cold Email Agency that specializes in personalized, intent-based outreach.

By focusing on short, impactful messaging and high deliverability, CleverViral helps businesses book quality meetings and maintain a consistent sales pipeline.

Its tailored campaigns and multi-channel approach make it an ideal choice for businesses looking to scale outreach effectively.

Key Features of CleverViral

• Personalized Campaigns: Creates buyer-focused emails that are short, clear, and impactful.

• High Deliverability: Uses tools and strategies to ensure your emails land in the primary inbox.

• Meeting-Ready Leads: Helps businesses secure quality leads ready for conversion.

• LinkedIn Integration: Combines email outreach with LinkedIn strategies for a multi-channel approach.

• Performance Optimization: Continuously improves campaigns based on data insights for better results.

CleverViral Pricing

CleverViral provides tailored pricing based on your outreach needs.

You can request a customized plan through their website to fit your specific goals and lead generation requirements.

Pros and Cons of CleverViral

Pros

• Professional service with a focus on high-quality leads.
• Strong weekly communication and campaign updates.
• Well-optimized campaigns for better engagement.

Cons

• May require more client involvement, which can be time-consuming.

• Mixed reviews on converting campaigns into actual sales.

CleverViral Review

CleverViral has received positive feedback, with a G2 Rating of 4.5/5. Many clients appreciate the agency’s ability to enhance their LinkedIn presence and secure meetings. 

One reviewer shared, “CleverViral helped me grow my LinkedIn followers and establish a personal brand, all while delivering professional support.”

‍ However, some users noted that the time commitment required from their end was slightly overwhelming and did not always lead to immediate sales conversions.

Summary of CleverViral

CleverViral is a reliable Cold Email Agency for businesses aiming to balance personalization with scalability.

Its focus on intent-based messaging, LinkedIn strategies, and high deliverability makes it a great option for those looking to improve their outreach.

While it may require some additional client input, the overall results make it a worthwhile choice for building connections and generating leads.

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How to Select the Right Cold Email Agency for Your Business

Choosing the right Cold Email Agency can be challenging with so many options offering different features and promises.

You might be asking, “Which one fits my goals and budget?” Don’t worry—evaluating your needs and comparing agencies is the key.

Also Read: 10 Best Email Outreach Tools in 2024 (Reviews & Pricing

To make it easier, I’ve created a comparison table highlighting the top agencies, their features, and who they’re best suited for.

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Comparison Table: Top Cold Email Agencies

Finding the right Cold Email Agency doesn’t have to be a guessing game.

By comparing features, pricing, and focus areas, you can match your needs to an agency that aligns with your goals.

Evaluate your priorities and choose a partner that delivers not just leads but real business value.

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Conclusion: Choosing the Right Cold Email Agency for Your Business

Finding the perfect Cold Email Agency can feel like searching for a needle in a haystack.

Maybe you’ve been burned by generic campaigns, lack of deliverability, or outreach that just doesn’t convert.

But the good news? You now have a clear breakdown of top-performing agencies to make an informed decision.

Here’s a quick recap to help you decide:

• Agent Frank (Salesforge): Best for AI-driven personalization, scalable outreach, and cost-effectiveness at just $499/month.

• Belkins: Ideal for large enterprises needing omnichannel strategies and expert lead generation.

• Cleverly: Great for LinkedIn-focused campaigns and AI-powered messaging.

• Growth.cx: Perfect for SaaS and tech companies seeking ROI-focused email outreach.

• CleverViral: Best for personalized, intent-based outreach to build connections and pipelines.

Still unsure? Ask yourself what matters most—budget, industry focus, or automation.

But why not simplify the decision?

Agent Frank by Salesforge stands out with its advanced AI personalization, scalable capabilities, and exceptional affordability.

Whether you’re looking to send thousands of emails or make your outreach feel more human, Agent Frank delivers results without the usual hassles.

Ready to supercharge your outreach? Try Agent Frank and see how an innovative Cold Email Agency can transform your sales pipeline.

Don’t just take my word for it—take the leap and experience results for yourself.