Case Study

How Justin Chi Achieved 10x Email Deliverability with Smartlead

Rajashree
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March 3, 2026
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In the dynamic world of startup growth, mastering the art of effective outreach is often the key to open up new opportunities and foster lasting connections.

In a recent interview, Justin Chi, the owner of Cold Email Hackers, reflected on the transformative impact of Smartlead on his agency's outreach efforts.

Justin recounted how, since the agency's inception, they have relied on Smartlead for their email campaigns, a decision that has proven instrumental in their success.

With their previous tools, their emails were often sent to spam folders, yielding negligible results. However, since adopting Smartlead, their campaigns have seen remarkable improvements.

This case study delves into the remarkable journey of Justin Chi and Cold Email Hackers, showcasing their evolution from initial challenges to becoming industry thought leaders.  Let's read on:

How it All Started: The Story of Justin Chi and Cold Email Hackers

Justin began his journey in email outreach while working as an SDR at ZoomInfo. His ability to secure an impressive 100 to 120 meetings per month through cold emails laid the foundation for his venture into cold email outreach for startups.

This journey led to the inception of Cold Email Hackers, a company born out of Justin's passion for helping early-stage software companies grow and succeed through personalized outreach.

His initial clients were garnered through reaching out to sales and marketing leaders, who were impressed by his email writing skills.

However, transitioning from using a well-known brand name like ZoomInfo to establishing credibility and trust with prospects without that backing presented a significant challenge.

Key Challenges Faced Along the Way

Cold Email Hackers primarily targeted early-stage software companies, focusing on industries such as FinTech, HR Tech, Sales Tech, and Marketing Tech. Now Justin faced two primary challenges

Brand Name Dependency

They faced the challenge of establishing credibility and trust with prospects without the brand recognition of a well-known company like ZoomInfo.

This meant he had to craft compelling messaging that resonated with the target audience and conveyed the value of his services effectively.

Overcoming this challenge required a deep understanding of his prospects' pain points and a strategic approach to building relationships through email outreach.

Deliverability Issues

Getting emails into the inbox of prospects was a major challenge for Cold Email Hackers. With spam filters becoming increasingly sophisticated, many of their emails were getting flagged as spam and not reaching their intended recipients.

This hindered their ability to engage with prospects and ultimately impacted their conversion rates.

Addressing this challenge required a combination of technical expertise and innovative strategies to improve email deliverability and ensure that their messages reached the right audience at the right time.

How Smartlead Helped to Solve the Challenges

Justin discovered Smartlead, designed to enhance email deliverability and improve response rates.

He stated that, "I used a bunch of little sending tools and I just realized like we're going to spam. And then I watched Jesse Ouellette's podcast on this. So I just started using Smartlead since then. And then we kind of adopted that whole multi -domain setup from there."

Improve Deliverability

Smartlead's advanced algorithms helped Cold Email Hackers' emails bypass spam filters, ensuring they reached their intended recipients' inboxes.

In its commitment to enhancing email deliverability, Smartlead offers a suite of features designed to optimize outreach campaigns.

Among these features is auto-rotating email accounts. It is a solution that allows users to scale their outreach efforts without concerns about daily limits or email reputation.

With a single click, users can create campaigns, connect mailboxes, and automatically rotate messages, streamlining the process and saving valuable time.

Smartlead's platform includes 110,000 diverse mailboxes spanning Outlook, Google, Zoho, and other providers, empowering users to build and protect their mailbox sending reputation.

By leveraging natural content and humanized sending patterns, Smartlead helps users improve their delivery reputation and increase the likelihood of inbox placement.

The platform's spam rescue feature further safeguards users' mailbox reputations by automatically protecting against spam flagging.

smartlead email deliverability

Enhance Inbox Management

The platform's master inbox feature made it easier for Cold Email Hackers to manage replies, leading to more efficient communication with prospects.

Smartlead offers a range of features designed to optimize inbox management.

One such feature is Views, which provides users with an easier way to manage their Master Inbox effectively by applying and saving filters.

With Views, users can set up multiple filters, including predefined ones, to organize their inbox according to their specific needs.

Another key feature of Smartlead is its instant email replies in the Master Inbox, which allows users to view incoming emails from leads in real-time.

This feature ensures that email responses are displayed in the Master Inbox as soon as they are received, regardless of the Email Service Provider (ESP) used. This real-time access to email responses enables users to stay on top of their communications and respond promptly to leads.

When using Smartlead's Master Inbox, users have the ability to organize responses using three sorting options:

  1. Unread Responses: This option keeps unread messages at the top of the inbox, ensuring that users prioritize these messages and stay on top of important communications.
  2. Response Time (desc): Sorting by descending response time places the most recent responses from leads at the top of the inbox. This feature helps users prioritize recent interactions and respond promptly to new messages.
  3. Sent Time (desc): Sorting by descending sent time brings the most recently sent email responses to the top of the inbox. This sorting option allows users to easily track the timeline of their email communications.
Justin Chi Case Study on Email Deliverability

Increase Response Rates

Smartlead’s multi-domain setup and segmentation features enabled Cold Email Hackers to tailor their messages effectively, resulting in higher response rates.

The tool has the provision of unlimited sender accounts, allowing users to add multiple email domains to a single email address. This flexibility enables users to manage various email campaigns seamlessly.

Additionally, Smartlead conducts email warmups to ensure that campaigns consistently reach prospects' inboxes, helping users avoid spam filters and enhance deliverability rates.

Unlike Gmail or Outlook, Smartlead imposes no daily limit on email sending, providing users with greater freedom and flexibility in their outreach efforts.

Furthermore, it offers custom conditional email triggers, automating the follow-up process. In a way it enable users to address prospects' queries promptly, potentially leading to a 7x increase in meeting bookings.

sign up and scale with Smartlead.ai

Notable Achievements

Since adopting Smartlead, Cold Email Hackers has seen significant improvements in their outreach campaigns:

  • Meeting Conversion Rates: Cold Email Hackers' adoption of Smartlead. has led to a remarkable improvement in their meeting conversion rates. Their best campaigns now convert at a rate of one meeting per 60 emails, a significant leap from their previous rate of one per 600 emails.
  • Client Satisfaction: The implementation of Smartlead has also resulted in higher client satisfaction for Cold Email Hackers. Clients have reported experiencing increased engagement and conversion rates from their email campaigns. This heightened satisfaction has fostered greater loyalty among clients, further solidifying Cold Email Hackers' reputation as a trusted partner in the arena of email outreach.
Justin also shared that, "We have several different clients. So just, we have a mix of consulting and then some just regular regions. So we work about 15 people in total. Four or five of those are just consulting, right? But we have about 15 companies and yeah, we use Smartlead for all of them. So for consulting ones, I always recommend Smartlead as well."

Key Factors Contributing to Success

Segmentation

Smartlead's robust segmentation features have played a pivotal role in Cold Email Hackers' success. By allowing them to target their messages more effectively based on specific criteria, such as industry, company size, or job title, Smartlead has enabled Cold Email Hackers to tailor their outreach efforts more precisely.

This targeted approach has led to increased engagement from prospects, ultimately contributing to higher conversion rates.

Innovative Strategies

Leveraging Smartlead's features, Cold Email Hackers have been able to stay ahead of spam filters and ensure maximum visibility for their messages.

The advanced algorithms have helped Justin Chi and his team bypass spam filters, ensuring that their emails reach their intended recipients' inboxes.

This innovative strategy has been instrumental in improving their deliverability rates and enhancing the overall effectiveness of their email campaigns.

Customer Support

Responsive customer support from Smartlead has been crucial in maximizing Justin's' email outreach efficiency. The ability to address any issues promptly has ensured that Cold Email Hackers can focus on their outreach efforts without any hindrance.

This proactive support has not only streamlined Cold Email Hackers' operations but has also contributed to their overall success and client satisfaction.

Vision for the Future with Smartlead Integrations


Smartlead has been instrumental in Cold Email Hackers' success, particularly in overcoming deliverability challenges and enhancing their outreach strategies.

With the support of Smartlead.ai, Justin and his team are in a strong position to further assist early-stage software companies in their growth and success journeys.

The platform's innovative features and advanced capabilities have proven to be invaluable assets for Cold Email Hackers. It enabled them to achieve their goals and make a positive impact in the industry.

Justin intends to further capitalize on Smartlead.ai's features to bolster Cold Email Hackers' outreach endeavors. He also looks forward to exploring additional integrations, such as Calendly or HubSpot calendar, to streamline their follow-up processes.

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Rajashree

Rajashree specializes in strategizing and planning B2B SaaS product marketing content. As a writer turned researcher, she has a deep-rooted affinity for writing data-driven content. With over 8 years of experience in the industry, Rajashree has documented her insights in a series of blogs covering genres such as SEO, Content Marketing, Lead Generation, and Email Marketing. Rajashree’s strategic approach and comprehensive industry knowledge make her a trusted authority in creating content that enhances brand visibility and supports business growth.

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What our customers say

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Felix Frank

Founder, StackOptimise

Smartlead's combination of automation, unlimited inboxes, and easy campaign management has completely transformed how we run cold email campaigns.

Justin Chi

Founder, Cold Email Hackers

We have about 15 companies and we use Smartlead for all of them.

Sander Poolman

Founder, DutchSave Media

One of the things I love about using Smartlead is the deliverability feature. If they landed in the bounce or spam folders, we could resolve this quickly.

Brigitta Ruha

Co-Founder, Growth Today

I want to continue to use Smartlead to make operations more seamless - the plan is to bring more clients here and build more SOPs.

Daniel Greaves

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Smartlead listens to the agencies and customers and builds according to what people want, that has really made things easier for us.

Harris Kenny

Founder, OutboundSync

We build an infrastructure product, and OutboundSync communicates with Smartlead itself. I love the webhook and API. They're really well done and keep getting better.

Sergio Ocampo

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With SmartDelivery, you can put all of that in the hands of the tool. It ensures your emails land in inboxes, and by running a simple test, you can see if you're hitting the mark.

Bharatt Arorah

Founder, Claygen

Deliverability is the cornerstone of cold email outreach. You could have the best email copy in the world, but if no one is seeing it, it's useless. I really love the feature where you can actually give client accesses to your clients.

Siddharth MV

Founder, Phyros

I'm amazed at the response time of Smartlead's customer support.

Louis Deslus

Head of Growth, EraB2B

I didn't want a tool built by a marketing team with flashy features that didn't solve real problems. I wanted a platform built by experts in email deliverability, and Smartlead checked all the boxes. Smartlead isn't just a tool for us, it's a part of our infrastructure.

Isaac Wood

Founder, Lever Growth

We focus on having consistent email deliverability for us and our clients, and Smartlead has consistently helped us achieve that.

Emmanuel Akatobi

Founder, PLNITUDE

Client Access and white-labeling have been a game-changer, saving us countless hours. With Smartlead, I'm happy with everything, but then I check their Slack community, and there's a new feature that just dropped!

Sebastian Grinkraut

CEO, Agile B2B Sales

SmartDelivery and SmartServers have been instrumental in helping us navigate the ever-changing deliverability landscape. The platform's ability to adapt to deliverability changes and provide real-time insights has been critical to our success.

Stan Stojanovic

Founder, frontBrick

Outbound isn't dead; it's just that the bar is higher now. Smartlead allowed me to unify advanced deliverability with multi-channel sequences, and that was a game-changer.

Alexis Lacabane

CEO, OneThousandPieces

From the beginning, Smartlead enabled us to build client access. Everything has been driven around making people like us revenue. I've seen the evolution of the tool, and it perfectly aligns with how I evolved myself in my business.

Abbas Somji

Co-Founder, The Playbook Agency

If you're a founder or a Sales VP looking to book meetings at scale with automation, Smartlead is your best bet.

Noah Snelgrove

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Using Smartlead's APIs has been a huge, huge game changer in our business. If you're an agency serious about scaling and signing new clients, Smartlead is the reliable partner you need.

Christian Oland

Founder, RevGen Labs

The accessible API was the number one feature that allowed us to build RevReply and automate everything - from response handling to custom reporting.

Rish G.

Founder, Cleverviral

We needed more agency-focused support, and since then, we haven't looked back.

Marc Gasser

Founder, Cotide

We integrated Smartlead for the whole sending part... we have a complete view.

Sebastian Vinther

Co-Founder, The Growth DNA

The decision to incorporate Smartlead was a no-brainer. Smartlead has given us the speed and flexibility to meet our clients' demands quickly.

Jaime de Wenetz

Founder, Unlock Management

50% of the business is made in Smartlead. Everyone that's doing outbound is using Smartlead. Emails don't go to spam, so why should we change it? In just 30 seconds, you can do everything. Being so simple and so effective at the same time, I think it's really important.

Aaron Ensminger

Founder, Brokr Leads

The ability to manage multiple email accounts, track every lead, and enjoy high reply rates through Smartlead has fundamentally changed our business.

Romain Osman

Co-Founder, Five Element

Smartlead is an absolute game-changer! With its exceptional features and support, I've experienced remarkable success. I would rate it 10 out of 10 for satisfaction. Smartlead enabled us to save valuable time and resources, leading to increased revenue and improved profitability.

Phil Sergenti

Founder, First LLC

The best one is actually real sending data - you have real hard data, which is, this actually bounced for three other users. The product is solid. I don't feel like I need that many features because the basics are covered.

David Borman

VP of Operations, KeyOutreach

Intuitive. Game-Changing. POWERFUL. Analytics, spintax, A/B testing, quick personalization. This is a game changer.

Wesley Hoang

Co-Founder, Cymate

I do not want to switch to another software. Pick a solution you trust, stick with it, and keep refining your copy.

Bruno Erckmam

CMO, Avalanche Capital

Managing large volumes of emails through multiple inboxes used to be a logistical nightmare. With Smartlead, the process is seamless. We book thousands of discovery calls through cold emails. These campaigns are generating leads at a scale we never thought possible.

Eric Nowoslawski

Founder, Growth Engine X

We came for the unlimited inboxes, and we stayed for the API. 1.5M cold emails/month, 7,767+ inboxes managed.

Ari Sohn

Head of Community & Ecosystem, TxtCart

You cannot replace having 10,000 touches with potential clients. When you have that much distribution and reach, you really start to see incredible results. The simplicity of Smartlead made all the difference. It doesn't require you to be a technical wizard.

Atishay Jain

Founder, Hyperke

Smartlead has been a game-changer for us. It increased our appointment volume, improved ease of use, and offered valuable features. 80% increase in appointments/month, peak of 276 appointments in a single month.

Matteo Fois

Founder, Kinetyca

Smartlead has been our cold email backbone from day one. The platform evolves constantly, keeping pace with how deliverability and personalization need to work today. 21% overall reply rate, $175K in 4 months for multiple B2B clients.

Gabriel Martinez

Founder, Reachflow

Smartlead is centered around deliverability and constantly evolving. Their API is not like any other platform. Smartlead covers all our needs. The focus on core features like deliverability and API integration is unmatched.

Maximilian Jendrall

CEO, Halfwarm

Our approach to crafting conversational emails led to reply rates that many of my peers thought were unattainable.

Piotr Mikrut

Founder, Experiment5m

Smartlead's automation and deliverability features transformed how we run outbound campaigns. This platform has been a game changer for our agency.

Jed Mahrle

Founder, Practical Prospecting

Every cold email tool can automate a sequence, but Smartlead focuses on what truly matters: deliverability and simplicity. Since I started using Smartlead, they seem to come out with new features every month. I've never reached that number in another tool. (referring to 500+ meetings)

Ryane Tully

Co-Founder, Pitchlane

With Smartlead, Pitchlane's B2B outreach has taken a significant leap forward. Our response rate skyrocketed to 16%. On a scale of 1 to 10, I would give it a solid 100.

Ryan Redmond

Founder, Cold Outreach Systems

Smartlead has helped us break records month after month for booking meetings and managing inboxes. It's super easy to scale without losing quality. We tried other tools, but they were clunky and hard for clients and our team. Smartlead's intuitive design made it the obvious choice.

Thijs van der Veer

Founder, Leadodo

Smartlead syncs effortlessly with Leadodo's lead database, making the job much easier for us. Smartlead's support team works 24/7 to help you with any issue, which is a welcome change from other support services.

Hugo Millington-Drake

Co-Founder & COO, Trigify

When we started our agency, we started with Smartlead on cold email, and we got that from zero to 30,000 a month in six months.

Johannes Fessler

CEO, Rock Solid Lead Generation

Smartlead is absolutely amazing! The software is easy to understand. I am not a techie but directly understand everything and if you really have a question the team always helps instantly.

Ty Shane

Founder, 10x AI Advisors

SmartDelivery has been the 100% reason we were able to achieve the numbers for our campaigns. Smartlead is the foundation of our cold email success. If Smartlead evolves into agentic AI integration, it will redefine the future of outbound.

Vladislav Molchanov

CEO, The Pipeline Inc.

Smartlead improved our deliverability and gave us the tools to turn cold emails into conversations. The support team's expertise was the cherry on top.

Mohan Muthoo

Founder, Spring Drive

My agency, for all of our clients as well as for our own campaigns, relies on Smartlead. It has truly become a cornerstone of our growth. Our reply rates are approximately 500% higher compared to those we experienced with legacy tools.

Frederik Jakobsen

Co-Founder & CEO, Danish Lead Co.

We run our entire business on your platform. We're sending plus 500,000 emails a month right now. The fact that we're able to do that and still primarily land in the inbox, all of that wouldn't have been possible without Smartlead.

Taylor Haren

Founder, Sales Automation Systems

AI will beat me at every level, so I learned how to use it instead of competing against it. 130% company growth in one year, 62% positive reply rate, $8.19M in staffing sales.

Calvin Wiltermood

Advisor, Trailway Growth

Smartlead, without a doubt, in my opinion, is the best tool in the market for cold email outreach. We're barely scratching the surface of what's possible. It's a foundation for agency growth. $700K+ ARR closed, 33% positive reply rate on 13,000-prospect campaign.

Tim Yakubson

Founder, B2B Boosted

We're probably averaging about 140 meetings per month, and most of them are coming from emails.

Jesse Hernandez

CEO, LearnEmail.com & MailGenius

With Smartlead, I was able to generate between 6,000 and 8,000 opt-ins and over 15,000 replies from cold email campaigns. Smartlead has excellent customer support, and Vaibhav is one of the best leaders I've ever seen. 620 replies in a single day with just 178 mailboxes. I scaled up to 8,800 emails a day and 450,000 emails a month.

Charles Moriceau

Co-Founder, letstrike

I started in cold email with a Google Sheet hack. Now we run everything from a single platform that handles hundreds of clients, multiple domains, advanced analytics.

Jayson DeMers

Founder, EmailAnalytics

When we started using it, we were pretty happy with the results and the ease of use. Once we got used to it, there was really not been any reason to move away from it. Smartlead enables us to use custom domains for tracking, which improves deliverability.

Felipe Fuhr

Partner & COO, Done For You Meetings

Smartlead has been a game-changer for us. The API and automation features have allowed us to streamline our processes and scale our campaigns without adding more team members.

Eric Nowoslawski

Founder, Growth Engine X

We came for the unlimited inboxes, and we stayed for the API. 1.5M cold emails/month, 7,767+ inboxes managed.

Ari Sohn

Head of Community & Ecosystem, TxtCart

You cannot replace having 10,000 touches with potential clients. When you have that much distribution and reach, you really start to see incredible results. The simplicity of Smartlead made all the difference. It doesn't require you to be a technical wizard.

Atishay Jain

Founder, Hyperke

Smartlead has been a game-changer for us. It increased our appointment volume, improved ease of use, and offered valuable features. 80% increase in appointments/month, peak of 276 appointments in a single month.

Matteo Fois

Founder, Kinetyca

Smartlead has been our cold email backbone from day one. The platform evolves constantly, keeping pace with how deliverability and personalization need to work today. 21% overall reply rate, $175K in 4 months for multiple B2B clients.

Gabriel Martinez

Founder, Reachflow

Smartlead is centered around deliverability and constantly evolving. Their API is not like any other platform. Smartlead covers all our needs. The focus on core features like deliverability and API integration is unmatched.

Maximilian Jendrall

CEO, Halfwarm

Our approach to crafting conversational emails led to reply rates that many of my peers thought were unattainable.

Piotr Mikrut

Founder, Experiment5m

Smartlead's automation and deliverability features transformed how we run outbound campaigns. This platform has been a game changer for our agency.

Jed Mahrle

Founder, Practical Prospecting

Every cold email tool can automate a sequence, but Smartlead focuses on what truly matters: deliverability and simplicity. Since I started using Smartlead, they seem to come out with new features every month. I've never reached that number in another tool. (referring to 500+ meetings)

Ryane Tully

Co-Founder, Pitchlane

With Smartlead, Pitchlane's B2B outreach has taken a significant leap forward. Our response rate skyrocketed to 16%. On a scale of 1 to 10, I would give it a solid 100.

Ryan Redmond

Founder, Cold Outreach Systems

Smartlead has helped us break records month after month for booking meetings and managing inboxes. It's super easy to scale without losing quality. We tried other tools, but they were clunky and hard for clients and our team. Smartlead's intuitive design made it the obvious choice.

Thijs van der Veer

Founder, Leadodo

Smartlead syncs effortlessly with Leadodo's lead database, making the job much easier for us. Smartlead's support team works 24/7 to help you with any issue, which is a welcome change from other support services.

Hugo Millington-Drake

Co-Founder & COO, Trigify

When we started our agency, we started with Smartlead on cold email, and we got that from zero to 30,000 a month in six months.

Johannes Fessler

CEO, Rock Solid Lead Generation

Smartlead is absolutely amazing! The software is easy to understand. I am not a techie but directly understand everything and if you really have a question the team always helps instantly.

Ty Shane

Founder, 10x AI Advisors

SmartDelivery has been the 100% reason we were able to achieve the numbers for our campaigns. Smartlead is the foundation of our cold email success. If Smartlead evolves into agentic AI integration, it will redefine the future of outbound.

Vladislav Molchanov

CEO, The Pipeline Inc.

Smartlead improved our deliverability and gave us the tools to turn cold emails into conversations. The support team's expertise was the cherry on top.

Mohan Muthoo

Founder, Spring Drive

My agency, for all of our clients as well as for our own campaigns, relies on Smartlead. It has truly become a cornerstone of our growth. Our reply rates are approximately 500% higher compared to those we experienced with legacy tools.

Frederik Jakobsen

Co-Founder & CEO, Danish Lead Co.

We run our entire business on your platform. We're sending plus 500,000 emails a month right now. The fact that we're able to do that and still primarily land in the inbox, all of that wouldn't have been possible without Smartlead.

Taylor Haren

Founder, Sales Automation Systems

AI will beat me at every level, so I learned how to use it instead of competing against it. 130% company growth in one year, 62% positive reply rate, $8.19M in staffing sales.

Calvin Wiltermood

Advisor, Trailway Growth

Smartlead, without a doubt, in my opinion, is the best tool in the market for cold email outreach. We're barely scratching the surface of what's possible. It's a foundation for agency growth. $700K+ ARR closed, 33% positive reply rate on 13,000-prospect campaign.

Tim Yakubson

Founder, B2B Boosted

We're probably averaging about 140 meetings per month, and most of them are coming from emails.

Jesse Hernandez

CEO, LearnEmail.com & MailGenius

With Smartlead, I was able to generate between 6,000 and 8,000 opt-ins and over 15,000 replies from cold email campaigns. Smartlead has excellent customer support, and Vaibhav is one of the best leaders I've ever seen. 620 replies in a single day with just 178 mailboxes. I scaled up to 8,800 emails a day and 450,000 emails a month.

Charles Moriceau

Co-Founder, letstrike

I started in cold email with a Google Sheet hack. Now we run everything from a single platform that handles hundreds of clients, multiple domains, advanced analytics.

Jayson DeMers

Founder, EmailAnalytics

When we started using it, we were pretty happy with the results and the ease of use. Once we got used to it, there was really not been any reason to move away from it. Smartlead enables us to use custom domains for tracking, which improves deliverability.

Felipe Fuhr

Partner & COO, Done For You Meetings

Smartlead has been a game-changer for us. The API and automation features have allowed us to streamline our processes and scale our campaigns without adding more team members.

Maximilien Moriceau

Co-Founder, letstrike

We've grown on zero capital, zero marketing, purely cold emailing - and that's the story we love to tell. The best approach is no approach if you can't handle domain meltdown. The second best is something like Smartlead that's built from the ground up for deliverability at scale.

Omar Abdalla

Founder, Fenixtal

Smartlead's white-labeling and automation let us punch above our weight. The 12M euros sales potential? That's what happens when you combine human creativity with Smartlead's precision.

Preeti Malik

Co-Founder, Digital Creativs

Nine out of 10. Ninety percent of our clients are on Smartlead unless they come in with an existing setup. That's the default.

Ethan Chamish

Co-Founder, BuildingReach

At the end of the day, you have to take a bet on one tool or another. It was a no-brainer taking that bet on Smartlead. We had to even turn down the volume of our marketing campaigns - Smartlead was capable of driving more volume than our sales team was able to fulfill.

David Sinclair Black

Founder & MD, Prospectiv

Since starting the business in January of this year, we've already generated $200K in sales exclusively from cold email. Smartlead has been central to our operations and has exceeded our expectations.

Philipp Käming

Founder, Growthlynk

There's so much stuff built on top of it. I would be dead if I had to rebuild it with another tool. I can manage hundreds of senders easily. I can send hundreds of thousands of emails.

Aamir Bajwa

Founder, Corebits

The platform's HubSpot integration, real-time Slack updates, and advanced campaign customization have been game changers for our business and our clients'.

Ryan Bryden

Founder, Apex Ascension

From day one, we've never used anything else.

Noah Gill

Founder, Leadmoves

Since using Smartlead, my clients have added millions in pipeline revenue, closed six-figure deals, and gotten 38 new customers in a single month.

Joao Simoes

Founder, Virtus Medium

Everything under one roof: I can see campaigns, leads, and domain status without leaving the platform. Warm-up that I can forget about: The system ramps send volume on its own, which frees my time.

Rene-Karl Lambert

Founder & CEO, Wind Growth

If you're a big automation enthusiast like me, there are no other tools on the market that allow you to 100% automate your business as Smartlead does. Smartlead easily saves me about 40 hours per week.

Alexander Yevtushenko

Founder, AvoraGrowth

The way you can create client sub-accounts on Smartlead is like no other tool out there. They're super simple, super cheap. Everything at the moment that you have in Smartlead is amazing. There's nothing really that needs to be changed specifically for our use case.

Patrick Spychalski

Co-Founder, The Kiln

I think people who are at the forefront of the correct tech tools like Smartlead and Clay are going to be the runaway leaders. We've had several clients that we've generated millions of dollars for, just using Smartlead campaigns.

Papa A. Sefa

Founder, Leveraged Outbound

My entire business is pretty much built upon Smartlead. Without it, I wouldn't have any business. Smartlead helped us save 80% of our time, book 20-30 monthly meetings, and close six-figure deals for our clients.

Wyatt Beemer

Founder & CEO, Soteria Media

The APIs and automations you can do with Smartlead are out of this world and it helps me run my business very smoothly.

Jack Hayward

Founder, FinestGC

Using Smartlead has been a total game-changer and has been one of the primary drivers in our ability to generate over $12M in the pipeline for our clients last year. The Master Inbox alone has saved us a considerable amount of time, the custom tagging system and subsequences save us at least 2 hours a day.

Julia C.

Account Executive

I like how easy it is to launch a campaign with Smartlead and how effective it is at delivering emails. It allows me to use multiple inboxes that it creates to safely send emails in bulk. The initial setup was very easy, and this contributes to the overall user-friendliness of Smartlead.

Preeti M.

Co-Founder, Digital Creativs

The platform and features continue to be updated and improved. Strong founder who cares about what users want to see and an amazing support team. The office hours on various topics such as email deliverability with the experts is nothing like I've seen for other SaaS products and the Smartlead Slack community is a cherry on top.

Bojan B.

Member, Lambda Group

I love the community and their Slack channel. I'm also thrilled with the AI inbox manager after the latest update because it saves us a lot of time, eliminating the need for VAs to manage inbox tasks. The setup was quite easy and they provide really extensive documentation and a very helpful community.

Atishay J.

Founder, Hyperke

I really appreciate the amazing customer support from Smartlead. Nobody even comes close in comparison. The founder Vaibhav is super helpful and hands-on with everything. The tool itself is reliable and technically sound. Plus, their APIs work well, which is another big plus for me.

Orestas N.

VP of Accounts, A-SALES

A comprehensive email outreach platform that converts cold emails into consistent qualified sales meetings for us, and our clients. It helps scale outreach with unlimited mailboxes, unlimited warmups, a limitless multi-channel infrastructure, and a unified inbox so we can manage our entire revenue cycle in one place.

Gabriel M.

Founder, Reachflow

Smartlead is centered around deliverability and constantly evolving. Their API is not like any other platform. Smartlead covers all our needs. The focus on core features like deliverability and API integration is unmatched.

Frederik J.

Co-Founder & CEO, Danish Lead Co.

Smartlead is the backbone of our cold email infrastructure. We run our entire business on your platform. We're sending plus 500,000 emails a month right now. The fact that we're able to do that and still primarily land in the inbox, all of that wouldn't have been possible without Smartlead.

Sebastian V.

Co-Founder, The Growth DNA

The decision to incorporate Smartlead was a no-brainer. Smartlead has given us the speed and flexibility to meet our clients' demands quickly.

Alexis L.

CEO, OneThousandPieces

I use Smartlead.ai every day across all my client accounts and it's become absolutely indispensable! From the beginning, Smartlead enabled us to build client access. Everything has been driven around making people like us revenue.

Charlie M.

Chief Executive Officer, Infoxify

It is a seasoned/advanced tool to send cold emails to your prospects. Many great features are there to improve the deliverability. Customer support is very nice, though it may take a while for you to get answer (It's not prompt response unless you are on their higher tier plan).

Emmanuel A.

Founder, PLNITUDE

Game changing tool for my agency, helping us generate 6-figures+ for our lead generation clients! Client Access and white-labeling have been a game-changer, saving us countless hours. With Smartlead, I'm happy with everything, but then I check their Slack community, and there's a new feature that just dropped!

Omkar K.

Associate Manager - Marketing

I use Smartlead for cold outreach, and it really simplifies things for me. I love how it handles the email warming up automatically and delivers emails without harming my domains. It's easy to use, and anyone can start with it, which is great. I also appreciate the option to set specific intervals between each email sent, as it just works right.

Powerful automated workflows that drive sales.

Try Smartlead's AI-led outbound system today.

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.