Case Study

Phyros Added $10-$15 million Revenue Pipeline to Clients Using Smartlead

Wajahat Ali
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February 24, 2026
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Key Takeaways

  • Booked 36 leads in 1 month for a client.
  • Achieve a 36.7% positive response rate using Smartlead—far exceeding the industry average.
  • Made Phyros 6-figure revenue and added $10-$15 million in revenue pipeline to clients.
  • Smartlead’s automation, spintax, and API integration streamlined Phyros’ operations, allowing them to scale their business and handle more clients.
  • With Smartlead’s support and community, Phyros overcame challenges and expanded its client base, including booking meetings with major enterprises like Amazon and Deloitte.

Introduction

In the fast-paced world of B2B tech, demand generation is a key strategy for scaling businesses and driving revenue. However, many companies struggle to achieve consistent results with the challenges of finding the right messaging, scaling outbound systems, and optimizing email deliverability

This was the case for Phyros, a demand generation agency specializing in AI-driven, intent-based outbound systems. Led by founder Siddharth, Phyros helps B2B tech companies in the US and internationally drive revenue through smart GTM strategies, AI-powered systems, and cold email campaigns.

Before discovering Smartlead, Phyros faced the typical struggles of cold email campaigns—poor deliverability, lack of visibility into inbox placement, and low response rates. 

However, after adopting Smartlead, Phyros overcame these challenges and scaled their and clients' businesses to new heights. Here's a closer look at how Smartlead transformed Phyros’ approach to cold emailing and demand generation.

About Phyros

Phyros is a demand generation agency that helps B2B tech companies—specifically service and product-based software companies—drive growth with highly targeted outbound strategies. 

They cater to large and smaller enterprises in the early stages of finding their product-market fit (PMF). Phyros’ approach leverages AI-driven systems and data-driven strategies to create scalable outbound systems for their clients, enabling them to reach the right decision-makers and boost revenue.

The Challenge

Despite a strong track record in helping clients build GTM strategies and run AI-powered outbound campaigns, Phyros faced several key challenges in their cold email efforts:

  • Poor Email Deliverability: Their emails often didn’t land in the desired inboxes, severely limiting their outreach success.
  • Low Response Rates: They struggled to secure positive responses despite sending large emails, resulting in missed opportunities for their clients.
  • Inefficiency with Previous Tools: Before using Smartlead, Phyros used another cold email platform - Instantly, but it failed to meet their evolving needs, particularly around automation, deliverability, and API integration.
  • Scaling and System Complexity: As their client base grew and their outreach efforts scaled, Phyros needed a solution that would help streamline and automate email operations while optimizing deliverability and response rates.

The Smartlead Solution

Siddharth discovered Smartlead after watching videos from Levi Arreola, a known advocate for cold email automation tools. After exploring Smartlead through its community and learning about its powerful features, Siddharth decided to switch from Instantly to Smartlead, which paid off quickly.

Key Features that Transformed Phyros’ Campaigns

SmartDelivery Solution

  • One of the most crucial tools Phyros implemented was Smartlead’s SmartDelivery solution, which dramatically improved their email deliverability rates. SmartDelivery helped Phyros understand where their emails landed and which inboxes performed best.
  • After running placement tests with Smartlead, they discovered Outlook was not yielding the desired results. Switching to Google inboxes significantly improved email placement and opened the doors to more successful campaigns.

Powerful API Integration

  • Smartlead's robust API integration became a game-changer for Phyros, enabling seamless integration with their existing systems. This allowed them to automate tasks, pull lead data, and build custom workflows—all critical for scaling their operations.
  • With his developer background, Siddharth appreciated Smartlead’s flexibility and ease of integration, enabling them to link Smartlead with tools like Clay and Notion and streamline internal processes.

Master Inbox Feature

  • Phyros’ clients were keen on having their inbox management handled, and Smartlead’s Master Inbox feature made this possible. This allowed Phyros to scale their operations by efficiently managing large numbers of inboxes without compromising on deliverability or response rates.
  • Spintax & Automation: Another standout feature was Smartlead’s spintax functionality, which enabled Phyros to generate multiple versions of their emails with personalized content automatically. This reduced the need for manual copywriting and allowed them to scale email outreach with better personalization.

Customer Support & Community

The customer support provided by Smartlead, combined with their active Slack community, had been a significant asset for Phyros. Even though they encountered the usual challenges when scaling, Smartlead’s team was always available to help and provide solutions quickly. This ensured that Phyros could focus on growing their business without worrying about technical roadblocks.

I'm amazed at the response time of Smartlead's customer support, especially Vaibhav, who, being the founder and handling many bigger tasks, is always available and active in the Slack community.

Results & Impact

Since implementing Smartlead, Phyros has seen impressive improvements in their outreach efforts and those of their clients. The combination of powerful automation tools, better email deliverability, and seamless integrations has allowed them to scale their cold email campaigns to new heights.

Improved Email Deliverability

Using Smartlead’s SmartDelivery solution and placement tests, Phyros saw a drastic improvement in their email inbox placement rates. By switching to Google inboxes and eliminating poor-performing setups like Outlook, they were able to ensure their emails landed in the right places.

Higher Response Rates

Phyros achieved a remarkable 36.7% unique positive reply rate in just one month for a software client, far exceeding the industry average of 1 positive response per 350 prospects. By improving their email deliverability and using automation, they could scale their outreach efforts and secure meetings with high-value clients.

Increased Lead Generation

Phyros generated 36 leads in one month with a 36.7% positive reply rate. This success was made possible by leveraging Smartlead’s advanced features, which enabled them to reach a wider audience and drive more meaningful engagement.

Revenue Growth

Smartlead played a key role in helping Phyros scale their business to six figures, adding between $10-$15 million in revenue pipeline for their clients by booking meetings with large enterprises such as Amazon, Deloitte, J.B. Hunt, and 20-30 other major businesses.

Looking Ahead

Siddharth is already looking forward what Smartlead does next after delivery some awesome solutions like SmartDelivery and SmartSenders that changed the deliverability game.

Conclusion

Smartlead has proven to be a critical partner in Phyros’ journey of scaling cold email campaigns and driving revenue for their business and clients. With Smartlead's powerful features like SmartDelivery, API integration, and inbox management, Phyros has optimized its outbound outreach, improved email deliverability, and secured high-quality leads. 

The results are a 36.7% positive response rate, improved deliverability, and a six-figure business. As Phyros looks to the future, Smartlead remains an essential tool in their demand generation strategy.

If you are looking for similar results for your business, then check out Smartlead’s 14-day free trial that comes with SmartDelivery, SmartSenders (configure email systems in 2-click), and more.

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Wajahat Ali

Wajahat Ali is a Technical Content Writer at Smartlead, specializing in the B2B and SaaS sectors. With a talent for simplifying complex concepts, he crafts clear, engaging content that makes intricate topics accessible to both experts and newcomers. Wajahat’s expertise spans across copywriting, social media content, and lead generation, where he consistently delivers valuable, impactful content that resonates with a global audience. His ability to blend technical knowledge with compelling storytelling ensures that every piece of content drives both understanding and results, helping businesses connect with their target markets effectively.

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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.