Case Study

Wind Growth’s Journey to Building 3x Revenue Pipeline

Sattwik Das
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February 24, 2026
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300% revenue pipeline growth in 2.5 months? 

In the complicated world of lead gen, that's a unicorn. 

But that's exactly what René-Karl Lambert and his agency, Wind Growth, achieved by embracing automation.

With his enthusiasm, agile mindset, and testing of different methods and software, René-Karl Lambert skillfully scaled his business with Smartlead. This case study highlights Wind Growth's remarkable achievements, from creating and implementing a specialized operating system for lead generation agencies to helping 100s of clients automate their lead gen and workflow. 

How It All Started: The Story of René-Karl Lambert and Wind Growth

René-Karl Lambert is the founder and CEO of Wind Growth, an agency that specializes in operations and automation primarily for online agencies. René's journey so far is fueled by prior experiences and his entrepreneurial spirit invested in providing efficient business operations solutions and lead generation.  

Combined with his authority in operations and automation building, Wind Growth focuses on building automation within different areas of its businesses, including cold email marketing for its clients. 

Although cold emailing is only about 30% of what they do, his agency boasts impressive revenue numbers for its clients through outbound campaigns. 

René, frustrated by the limitations of other tools, came across Smartlead while looking for an efficient sales engagement platform. Influenced by professional networks and communities, Wind Growth switched to Smartlead which helped it scale its operations and expand its client base while maintaining a sharp focus on delivering exceptional results.

And the result?
Wind Growth generated a staggering 300% revenue pipeline for a specific client in just 2.5 months. 

As René walks us through his triumphant journey as a successful agency owner, he fondly acknowledges the role Smartlead played in his success story. 

Challenges Faced Along the Way

René-Karl Lambert and his agency, Wind Growth, faced several challenges in their operations and automation work initially, particularly in lead generation and business process automation. 

René's struggled with addressing operational inefficiencies in lead generation agencies. His clients required streamlined processes to scale effectively, but he found it difficult to find a product for the market fit. 

Before adopting Smartlead, René explored various tools and found that many had significant limitations, preventing him from automating business processes, including lack of customization, insufficient automation capabilities, and inability to integrate seamlessly with other platforms.

Moreover, René wanted to automate tasks to save time, but finding tools that could deliver high levels of automation. This leads to another pain point, the lack of custom variables and workflows.

Managing a large number of data and leads efficiently was not streamlined within one platform. These challenges reflect the complexity of operating in the automation and lead generation space, particularly when aiming to provide high-value, customizable solutions to online agencies and their clients. 

Notable Achievements 

René and his agency successfully created and implemented an operating system for lead generation agencies. 

Wind Growth boasts of working directly with over 15 lead generation agencies, and successfully building a streamlined automation system for optimal operation. 

Since its inception, Wind Growth impacted over 100 clients, improving lead generation efforts across these businesses. With their operating system and Smartlead, René helped save thousands of hours for his clients. The implication substantially increased efficiency and productivity for these agencies.

Wind Growth's strategies and tools, including Smartlead, led to dramatic increases in sales pipelines, including a branding agency's pipeline growth to three times its annual revenue in just 2.5 months. This suggests a significant potential increase in revenue, though the exact numbers are not detailed.

René also highlighted the role of community in his success. Overall, René and his agency significantly generated quantifiable impact in time savings, revenue generation, and operational efficiency for their clients.

Key Factors Contributing to Success

René-Karl Lambert and his agency, Wind Growth, highlight several key factors that have significantly contributed to their success. The adoption and effective use of Smartlead, a tool central to Wingrote's operations, is a major factor. Smartlead's advanced features and API have enabled Wind Growth to implement complex functionalities and automate significant operational procedures.

By developing an operating system that automates 80% to 90% of lead generation business, Wind Growth has successfully streamlined operations for numerous lead generation agencies.

Wind Growth provides highly tailored and effective solutions with Smartlead’s ability to customize solutions based on specific needs, which has been instrumental in addressing specific requirements of its clients.

Engaging with a community of lead generation agencies and incorporating feedback into product development has been instrumental in Wind Growth’s success. This community-first approach has kept their solutions relevant, innovative, and closely aligned with the industry's evolving needs. 

René's background and Wind Gorwth's focus on serving online agencies, particularly in lead generation, have positioned them as experts in this niche. Their deep understanding of the industry's challenges and opportunities worked as a foundation for their success.

Working with over 15 lead generation agencies and impacting over 100 clients has not only expanded their reach but also amplified their influence across the lead generation sector.

Looking Ahead for the Future of Lead Generation

Given its success in developing an operating system for lead generation agencies, Wind Growth looks forward to expanding its offerings, leveraging Smartlead's automation, Master Inbox 3.0, and lead generation capabilities. This could involve targeting new market segments or industries that could benefit from their expertise in automation and operations.

René's approach to product development, influenced by community feedback and engagement, suggests a future focus on continuous innovation. As Smartlead evolves and introduces new features, Wind Growth is likely to incorporate these developments into its operating system, further enhancing its functionality and appeal to clients.

The success through community engagement and networking might encourage Wind Growth to organize industry events, participate in forums, and contribute to discussions that shape the future of lead generation and automation technologies and establish them as an authority in lead generation. 

In summary, with growth, innovation, and expansion, Wind Growth's continued success will likely be driven by a commitment to excellence, adaptability to market changes, and a focus on delivering value to its clients powered by Smartlead. 

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Sattwik Das

Sattwik Das is a Digital Marketing professional at Smartlead, skilled in SEO, SMM, and content creation. He focuses on delivering well-researched, SEO-optimized content that helps businesses enhance their digital presence. Sattwik’s creativity in content marketing and copywriting plays a significant role in boosting business credibility, driving sales, and improving customer engagement.

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Frequently asked questions

What is Smartlead's cold email outreach software?
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Smartlead's cold email outreach tool helps businesses scale their outreach efforts seamlessly. With unlimited mailboxes, fully automated email warmup functionality, a multi-channel infrastructure, and a user-friendly unibox, it empowers users to manage their entire revenue cycle in one place. Whether you're looking to streamline cold email campaigns with automated email warmups, personalization fields, automated mailbox rotation, easy integrations, and spintax, improve productivity, or enhance scalability with subsequences based on lead’s intentions, automated replies, and full white-label experience, our cold email tool implifies it in a single solution.

How does Smartlead's unlimited mailboxes feature benefit me?
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Our "unlimited mailboxes" feature allows you to expand your email communications without restrictions imposed by a mailbox limit. This means you won't be constrained by artificial caps on the number of mailboxes you can connect and use. This feature makes Smartlead the best cold email software and empowers you to reach a wider audience, engage with more potential customers, and manage diverse email campaigns effectively.

What do you mean by "unibox to handle your entire revenue cycle"?
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The "unibox" is one of the unique features of Smartlead cold email outreach tool, and it's a game-changer when it comes to managing your revenue cycle. The master inbox or the unibox consolidates all your outreach channels, responses, sales follow-ups, and conversions into one centralized, user-friendly mailbox.

With the "unibox," you gain the ability to:
1. Focus on closing deals: You can now say goodbye to the hassle of logging into multiple mailboxes to search for replies. The "unibox" streamlines your sales communication, allowing you to focus on what matters most—closing deals.

2. Centralized lead management: All your leads are managed from one central location, simplifying lead tracking and response management. This ensures you take advantage of every opportunity and efficiently engage with your prospects.

3. Maintain context: The "unibox" provides a 360-degree view of all your customer messages, allowing you to maintain context and deliver more personalized and effective responses.

Can Smartlead help improve my email deliverability rates?
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Yes, our cold emailing software is designed to significantly improve your email deliverability rates. It enhances email deliverability through AI-powered email warmups across providers, unique IP rotating for each campaign, and dynamic ESP matching.

Real-time AI learning refines strategies based on performance, optimizing deliverability without manual adjustments. Smartlead's advanced features and strategies are designed to improve email deliverability rates, making it a robust choice for enhancing cold email campaign success.

Can I integrate Smartlead with other tools I'm using?
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Certainly, Smartlead cold email tool is designed for seamless integration with a wide range of tools and platforms. Smartlead offers integration with HubSpot, Salesforce, Pipedrive, Clay, Listkit, and more. You can leverage webhooks and APIs to integrate the tools you use. Try Now!

What is Smartlead, and how can it enhance my cold email campaigns?
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Smartlead is a robust cold emailing software designed to transform cold emails into reliable revenue streams. Trusted by over 31,000 businesses, Smartlead excels in email deliverability, lead generation, cold email automation, and sales outreach. A unified master inbox streamlines communication management, while built-in email verification reduces bounce rates.Additionally, Smartlead offers essential tools such as CNAME, SPF Checker, DMARC Checker, Email Verifier, Blacklist Check Tool, and Email Bounce Rate Calculator for optimizing email performance.

How does Smartlead, as a cold emailing tool, automate the cold email process?
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Smartlead’s robust cold email API and automation infrastructure streamline outbound communication by transforming the campaign creation and management processes. It seamlessly integrates data across software systems using APIs and webhooks, adjusts settings, and leverages AI for personalised content.

The cold emailing tool categorises lead intent, offers comprehensive email management with automated notifications, and integrates smoothly with CRMs like Zapier, Make, N8N, HubSpot, Salesforce, and Pipedrive. Smartlead supports scalable outreach by rapidly adding mailboxes and drip-feeding leads into active campaigns Sign Up Now!

How does Smartlead ensure my emails don't land in the spam folder?
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Smartlead, the best cold email marketing tool, ensures your emails reach the intended recipients' primary inbox rather than the spam folder.

Here's how it works:
1. Our "unlimited warmups" feature is designed to build and maintain a healthy sending reputation for your cold email outreach. Instead of sending a large volume of emails all at once, which can trigger spam filters, we gradually ramp up your sending volume. This gradual approach, combined with positive email interactions, helps boost your email deliverability rates.

2. We deploy high-deliverability IP servers specific to each campaign.

3. The ‘Warmup’ feature replicates humanized email sending patterns, spintax, and smart replies.

4. By establishing a positive sender reputation and gradually increasing the number of sent emails, Smartlead minimizes the risk of your emails being flagged as spam. This way, you can be confident that your messages will consistently land in the primary inbox, increasing the likelihood of engagement and successful communication with your recipients.

What features does Smartlead offer for cold email personalisation?
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Smartlead enhances cold email personalisation through advanced AI-driven capabilities and strategic integrations. Partnered with Clay, The cold remaining software facilitates efficient lead list building, enrichment from over 50 data providers, and real-time scraping for precise targeting. Hyper-personalised cold emails crafted in Clay seamlessly integrate with Smartlead campaigns.

Moreover, Smartlead employs humanised, natural email interactions and smart replies to boost engagement and response rates. Additionally, the SmartAI Bot creates persona-specific, high-converting sales copy. Also you can create persona-specific, high-converting sales copy using SmartAI Bot. You can train the AI bot to achieve 100% categorisation accuracy, optimising engagement and conversion rates.

Is Smartlead suitable for both small businesses and large enterprises?
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Smartlead accommodates both small businesses and large enterprises with flexible pricing and comprehensive features. The Basic Plan at $39/month suits small businesses and solopreneurs, offering 2000 active leads and 6000 monthly emails, alongside essential tools like unlimited email warm-up and detailed analytics.

Marketers and growing businesses benefit from the Pro Plan ($94/month), with 30000 active leads and 150000 monthly emails, plus a custom CRM and active support. Lead generation agencies and large enterprises can opt for the Custom Plan ($174/month), providing up to 12 million active lead credits and 60 million emails, with advanced CRM integration and customisation options.