How FueltoFly Doubled Inboxes and Reduced Costs with Smartlead: A Case Study

Created On:
July 10, 2024
Updated On:
July 10, 2024
FueltoFly Case Study

Data is the fuel that drives success in today’s business world.  

This is especially true in the space of lead generation, where data-driven strategies can significantly enhance efficiency and outcomes. 

Traditional methods of lead generation, which often involved hours of cold calling and chasing potential leads, are being replaced by more sophisticated approaches. 

Data-driven lead generation and email outreach have emerged as game-changers, enabling businesses to identify and engage with ideal prospects more effectively. 

FueltoFly, under the leadership of Founder & CEO Daniel Greaves, is a prime example of a company built on this philosophy. 

This case study explores the journey of FueltoFly, the challenges they faced, and how Smartlead has been instrumental in their success.

The Journey of Daniel Greaves and FueltoFly 

The story of FueltoFly began nearly five years ago when Daniel Greaves, drawing from his experience as a sales leader, decided to launch a company specializing in cold email outreach. Seeing the potential of outbound lead generation, Daniel envisioned a business that could use data-driven strategies to transform how companies connect with their prospects.

Despite starting FueltoFly during the challenging COVID-19 period, Daniel and his team saw the pandemic as an opportunity rather than a setback. Instead of letting challenges hold them back, they intensified their efforts, focusing on business growth and acquiring new clients. Their perseverance paid off, leading to a substantial increase in clients and team expansion.

Innovation is central to FueltoFly's approach. 

As early adopters of cutting-edge technologies, they were involved in the GPT-3 beta program, using AI to scale operations and streamline efficiency. 

This forward-thinking mindset has kept them ahead of the curve, continually improving their services.

Target Audience and Ideal Customer

As a cold email agency, FueltoFly maintains a flexible and agnostic approach, capable of adapting their strategies to meet the unique needs and goals of each client. Their dedication to targeting overlooked segments of the market underscores their commitment to providing impactful outreach services tailored to specific business objectives.

Let’s delve deeper into this. 

FueltoFly's target audience and ideal customers primarily consist of companies within the finance sector, including venture capital funds and firms involved in fundraising. Their focus extends to businesses with tangible products, such as those seeking retail placement in supermarkets, airlines, and other large-scale outlets.

Unlike many competitors who concentrate on serving SaaS businesses, FueltoFly distinguishes itself by also advocating for companies that may receive less attention in the cold email outreach arena. They prioritize reaching out to businesses and sectors that are not inundated with cold emails, aiming to provide a personalized and effective outreach strategy.

This approach allows FueltoFly to cater to a diverse range of industries, including technology companies targeting markets like healthcare and luxury products.

The Challenges Faced By The Company 

Before integrating Smartlead into their operations, FueltoFly faced several challenges that impeded their efficiency and growth:

  • Manual Data Management: Initially, FueltoFly struggled with manually transferring data between email sequences. This included labor-intensive tasks like editing variables such as company names within emails, which was time-consuming and prone to errors.
  • Scalability and Operations: As FueltoFly expanded their client base, scaling their operations became increasingly difficult with their existing tools. Efficiently managing multiple clients while delivering high-quality outreach campaigns required streamlined operations and scalable solutions.
  • Identifying Low-Performing Sequences: Another significant challenge was swiftly identifying and addressing underperforming email sequences. Monitoring metrics like open rates and response rates was crucial for optimizing campaign effectiveness and ensuring client satisfaction.
  • Lead Management Complexity: FueltoFly encountered complexities in managing leads across various campaigns and client accounts. They needed robust lead management capabilities to meet diverse client needs and ensure timely follow-ups.

As the landscape of cold email outreach evolved, businesses now require a comprehensive infrastructure beyond effective email copywriting. This includes managing tasks such as sender rotation, inbox management, domain management, SMTP configuration, and detailed analytics. Keeping pace with these technological advancements is essential for maintaining competitiveness in the industry.

Recognizing these challenges, FueltoFly understood the necessity for a solution that could streamline operations, enhance scalability, and provide robust management capabilities across their email outreach efforts.

How Smartlead Helped FueltoFly Overcome These Challenges?

FueltoFly found the perfect fit with Smartlead, solving their operational challenges and boosting their outreach capabilities.

Powerful API Integration: A major requirement for FueltoFly was a tool with a strong API that could support their custom integration needs. Smartlead's robust API and automations provided the flexibility to build and customize functionalities tailored to their specific requirements, enhancing operational efficiency and scalability.

Spintax for Improved Deliverability: Smartlead's spintax feature optimized email deliverability by enabling dynamic text variations. This capability helped FueltoFly boost engagement and avoid spam filters, improving overall deliverability rates.

Unlimited Inboxes and Scalability: Unlike seat-based pricing models, Smartlead offered FueltoFly the flexibility of unlimited inboxes. This feature enabled them to onboard new clients without worrying about additional costs, supporting their scalable growth strategy effectively.

“Smartlead listens to the agencies and customers and builds according to what people want – that has really made things easier for us.” - Daniel Greaves, Founder & CEO, FueltoFly.

A/B Testing Capabilities: Smartlead's A/B testing functionality allowed FueltoFly to experiment with different email variations directly within the platform. This feature proved invaluable in optimizing campaign performance and refining their outreach strategies based on real-time data insights.

Client Access and Transparency: FueltoFly appreciated Smartlead's client access feature, which allowed their clients to monitor campaign progress and performance metrics. 

This transparency not only strengthened client relationships but also instilled confidence in the effectiveness of FueltoFly's outreach efforts.

Community Engagement: Smartlead's active Slack community provided FueltoFly with a collaborative space for knowledge sharing and support among users. This engagement helped FueltoFly leverage industry best practices and enhance their overall experience with the platform.

Before joining Smartlead, they managed 400 inboxes; now, they've doubled that number. They've saved 70% in costs by consolidating their sequencing needs into one platform.


FueltoFly has found Smartlead to be essential to their operations, eagerly anticipating new features, especially in lead management and email warmup. The robust capabilities and support from Smartlead have significantly boosted their growth and operational efficiency.

If you're looking to scale your cold emailing business and need powerful tools to support your efforts, try a free trial of Smartlead today and see the impact firsthand.

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Author’s Details

Priya Abraham

Priya is an experienced content writer and editor, known for crafting SEO-optimized blogs with a unique perspective. Specializing in creating valuable content that delivers tangible outcomes, Priya is passionate about leveraging the power of words to enhance online presence and credibility.


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Frequently asked questions

General Questions

What is Smartlead's cold email outreach software?

Email automation FAQs- Smartlead

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.

What is Smartlead, and how can it enhance my cold email campaigns?

Email automation FAQs- Smartlead

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 the "unlimited mailboxes" feature benefit me?

Email automation FAQs- Smartlead

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.

How does Smartlead as a cold emailing tool can automate the cold email process?

Email automation FAQs- Smartlead

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!

What do you mean by "unibox to handle your entire revenue cycle"?

Email automation FAQs- Smartlead

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.

How does Smartlead ensure my emails don't land in the spam folder?

Email automation FAQs- Smartlead

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.

Can Smartlead help improve my email deliverability rates?

Email automation FAQs- Smartlead

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.

What features does Smartlead offer for cold email personalisation?

Email automation FAQs- Smartlead

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.

Can I integrate Smartlead with other tools I'm using?

Email automation FAQs- Smartlead

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!

Email automation FAQs- Smartlead

Is Smartlead suitable for both small businesses and large enterprises?

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.

Email automation FAQs- Smartlead

What type of businesses sees the most success with Smartlead?

No, there are no limitations on the number of channels you can utilize with Smartlead. Our cold email tool offers a multi-channel infrastructure designed to be limitless, allowing you to reach potential customers through multiple avenues without constraints.

This flexibility empowers you to diversify your cold email outreach efforts, connect with your audience through various communication channels, and increase your chances of conversion. Whether email, social media, SMS, or other communication methods, Smartlead's multi-channel capabilities ensure you can choose the channels that best align with your outreach strategy and business goals. This way, you can engage with your prospects effectively and maximize the impact of your email outreach.

Email automation FAQs- Smartlead

How can Smartlead integrate with my existing CRM and other tools?

Smartlead is the cold emailing tool that facilitates seamless integration with existing CRM systems and other tools through robust webhook and API infrastructure. This setup ensures real-time data synchronisation and automated processes without manual intervention. Integration platforms like Zapier, Make, and N8N enable effortless data exchange between Smartlead and various applications, supporting tasks such as lead information syncing and campaign status updates. Additionally, it offers native integrations with major CRM platforms like HubSpot, Salesforce, and Pipedrive, enhancing overall lead management capabilities and workflow efficiency. Try Now!

Email automation FAQs- Smartlead

Do you provide me with lead sources?

No. Smartlead distinguishes itself from other cold email outreach software by focusing on limitless scalability and seamless integration. While many similar tools restrict your outreach capabilities, Smartlead offers a different approach.

Here's what makes us uniquely the best cold email software:

1. Unlimited Mailboxes: In contrast to platforms that limit mailbox usage, Smartlead provides unlimited mailboxes. This means you can expand your outreach without any arbitrary constraints.

2. Unique IP Servers: Smartlead offers unique IP servers for every campaign it sends out. 

3. Sender Reputation Protection: Smartlead protects your sender reputation by auto-moving emails from spam folders to the primary inbox. This tool uses unique identifiers to cloak all warmup emails from being recognized by automation parsers. 

4. Automated Warmup: Smartlead’s warmup functionality enhances your sender reputation and improves email deliverability by maintaining humanised email sending patterns and ramping up the sending volume. 

Email automation FAQs- Smartlead

How secure is my data with Smartlead?

Ensuring the security of your data is Smartlead's utmost priority. We implement robust encryption methods and stringent security measures to guarantee the continuous protection of your information. Your data's safety is paramount to us, and we are always dedicated to upholding the highest standards of security.

How can I get started with Smartlead?

Email automation FAQs- Smartlead

Getting started with Smartlead is straightforward! Just head over to our sign-up page and follow our easy step-by-step guide. If you ever have any questions or need assistance, our round-the-clock support team is ready to help, standing by to provide you with any assistance you may require. Sign Up Now!

How can I reach the Smartlead team?

Email automation FAQs- Smartlead

We're here to assist you! You can easily get in touch with our dedicated support team on chat. We strive to provide a response within 24 hours to address any inquiries or concerns you may have. You can also reach out to us at

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