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From Failed T-Shirts to $150M: Guillaume’s Lemlist Breakthrough
How Guillaume overcame rejection, financial struggles, and failed projects to build Lemlist, now worth $150M.
Welcome to Money Making Story,

Today, we’re thrilled to share the story of Guillaume Moubeche, who went from being broke with just $1,000 to building Lemlist, a $150 million SaaS business.
In this discussion, we’ll discuss his:
Top Advice from Guillaume
A Tough Start in Paris
The First Venture
Discovering Lead Generation
Make Money with ChatGPT & Canva
The Birth of Lemlist
Challenges and Growth
Finding the Magnet Persona
Lessons in Success
Lessons for Aspiring Entrepreneurs
A Story Worth Reading
Top Advice from Guillaume:
"The truth is, your idea will never be perfect, and the moment will never be perfect. You just have to start."
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Guillaume Moubeche’s journey is a testament to resilience, creativity, and the relentless pursuit of entrepreneurship. From his humble beginnings in Paris to leading a $150 million startup, Moubeche’s story is an inspiring roadmap for aspiring entrepreneurs everywhere.
Humble Beginnings: A Tough Start in Paris
Guillaume Moubeche, or Guom, grew up in Paris, in a modest household with parents who weren’t entrepreneurs. His parents, originally from a farm in southwest France, worked hard to provide a good education for Guillaume. However, his early life was marked by financial struggles and a series of shitty jobs.
"I applied to McDonald’s like my friends, but they rejected me. That rejection made me feel like I was at rock bottom."
The rejection was a wake-up call, pushing him to realize that the traditional path wasn’t for him. He decided he wanted to be his own boss, create his own rules, and build something meaningful.
The First Venture: A T-Shirt Business with His Dad
Armed with a Master’s degree in marketing, Guillaume set out to create his first venture—a t-shirt business with his father. He was driven by the idea of giving back to his family and proving himself as an entrepreneur. However, the business failed, selling only six shirts. This failure strained his relationship with his father, leaving him feeling ashamed and defeated.
"My dad was disappointed, and I was ashamed. We didn’t talk for over a year."
I was mad at my dad for not investing more money, But in reality, I was mad at myself.
This pivotal moment taught him the importance of taking responsibility for his own failures and decisions.
Discovering Lead Generation
After the t-shirt business folded, Guillaume joined a friend’s lead generation agency. Immersing himself in sales prospecting and growth hacking, he quickly became an expert. But Guillaume’s ambitions went beyond running an agency—he wanted to create a scalable product.
“I saw that LinkedIn allowed you to see who visited your profile, I thought, what if we could do this on any website?”
He hired junior developers in Russia to build the product, investing all his savings—about $5,000. However, a single change in LinkedIn’s code rendered the entire project useless. With only $1,000 left, Guillaume returned to France, facing intense pressure from his girlfriend and friends to find a job.
The Birth of Lemlist
Refusing to give up, Guillaume pivoted to a ‘red ocean’ strategy—entering a competitive space but differentiating himself with unique features. He launched Lemlist, a sales automation tool focused on personalization to make sales more human. The initial version took just two weeks to build, and Guillaume personally onboarded the first 100 customers, even writing their campaigns himself.
His deep involvement as both the creator and user of the product allowed him to iterate quickly, building a feedback loop that drove the platform’s early success.
Challenges and Growth
Lemlist experienced explosive growth, reaching $250,000 in annual recurring revenue (ARR) in its first year and $1 million in its second. By year three, it hit $8 million ARR, and within four years, Lemlist reached $10 million ARR. However, Guillaume soon faced new challenges. A major redesign of the product alienated some customers, leading to a month of zero growth.
Instead of panicking, Guillaume worked tirelessly to address customer feedback, ultimately improving activation rates and regaining momentum.
Finding the Magnet Persona
A breakthrough came when Guillaume identified the ‘magnet persona’ for Lemlist: sales teams. By focusing on this ideal customer, Lemlist positioned itself as the go-to tool for driving revenue, which attracted more customers naturally. This strategy helped Lemlist overcome its growth plateau and achieve $30 million ARR with $10 million EBITDA.
Lessons in Success
Despite his financial success, Guillaume emphasizes that money is not the ultimate goal. “I don’t like fancy watches, and my vacations are just camping in the mountains,” he says. For Guillaume, the journey has been about personal growth, helping others, and reconnecting with his values.
One of his most meaningful achievements was supporting his parents financially, ensuring they no longer had to worry about money. “It’s the best feeling in the world,” he shares.
Lessons for Aspiring Entrepreneurs
Guillaume’s story offers a wealth of insights for anyone looking to embark on their entrepreneurial journey:
Start Imperfectly: Your idea or skills will never be perfect. Take action anyway.
Learn Relentlessly: Invest in yourself through experiences, learning opportunities, and experimentation.
Focus on Customers: Understand your ideal customer and deliver real value to them.
Be Patient Yet Persistent: Overnight success often takes years of hard work and persistence.
Adapt and Iterate: Use customer feedback to improve your product continuously.
Guillaume Moubeche’s story is a powerful reminder that entrepreneurial success is rarely overnight. It’s built on resilience, continuous learning, and the ability to turn failures into opportunities.
"The truth is, your idea will never be perfect, and the moment will never be perfect. You just have to start."
For aspiring entrepreneurs, Guillaume’s advice is clear: Take action, invest in yourself, and enjoy the journey.
A Story Worth Reading
In 2014, Microsoft was imploding.
Their $7.2B Nokia purchase was a disaster. Windows 8 was failing. Their culture was toxic.
Until they promoted ONE man who would transform Microsoft into a $3 TRILLION empire...
Here's the full story:
— Fernando Cao Zheng (@thefernandocz)
12:49 AM • Dec 31, 2024
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