The angel investor’s reason for writing the check was not a conventional vote of confidence. Michel Meyer looked at the four founders of Aircall in early 2015 and told them something that the team has shared with every new employee ever since: “Guys, you’re not the smartest, and I’m not too sure of what you’re building, but I know you will never give up and you will always move forward.”
That was enough to get the ball rolling.
By the time Aircall published its founding story publicly in 2022 to announce passing $100 million in ARR, the founders had adopted a symbol that perfectly captured the spirit of that early investor’s assessment. Their symbol was a tractor. Ugly, noisy, slow, but it grinds on and never stops.
The Aircall success story is not about a brilliant insight that nobody else had seen. It is not about first-mover advantage in an untouched market. It is about four people from France who identified a real gap in the software stack that every business needed, got rejected by most of the investors they approached, flew to San Francisco in desperation, figured out the one strategic insight that changed everything, and then built an ugly, noisy, slow-grinding company into a French unicorn worth over $1 billion.
The tractor made it.
The eFounders Studio and the Perfect Storm
Aircall was not born from a garage or a university dormitory. It was born inside eFounders, a Paris-based startup studio co-founded by Thibaud Elzière and Quentin Nickmans, which had a specific model: identify undisrupted categories in business software, recruit operator-founders to build companies in those categories, provide initial capital and infrastructure, and spin the companies out once they found their footing.
The eFounders thesis in 2014 was that the entire SaaS-for-business stack was being rebuilt from scratch: email, accounting, HR, project management, sales. But the phone system had been left behind. Business telephony in 2014 ran on physical PBX hardware from legacy vendors, required on-site installation, needed dedicated IT resources to maintain, and if you wanted international numbers or any kind of analytics, you were looking at enterprise software that took months to implement and cost more than most SMBs could justify.
The founders who took on the phone challenge within eFounders were Olivier Pailhes, who had worked at the Boston Consulting Group and ArcelorMittal and had seen inside large enterprises how broken business telephony was; Jonathan Anguelov, with a finance background from ESCP and entrepreneurial instincts in real estate and tech; Pierre-Baptiste Béchu, a computer engineer from École Centrale de Lyon who had previously co-founded a technical recruiting platform; and Xavier Durand, the other technical co-founder.
Their founding diagnosis was specific and turned out to be correct. Three things were converging simultaneously: existing phone system offerings were old, hardware-oriented, and expensive to deploy; new cloud telecommunications infrastructure was emerging that made it possible to build software without building telecom stacks; and WebRTC, the technology behind what would become Google Meet, was getting standardized across browsers, enabling any browser to function as a phone application. The specific timing of these three convergences made 2014 the moment to start rather than 2011 or 2017.
The product they built in a few weeks at eFounders was an MVP: get phone numbers from around the world, share calls across a team, and do it through an interface simple enough for a 10-year-old to use. Everything had to be instant, hassle-free, and beautiful. The phrase the founders used repeatedly was that the product should work for a 10-year-old.
$760 in Monthly Revenue and the Decision That Mattered
On June 1, 2014, Aircall made its early beta customers pay for the service. The price was $19 per month, unlimited everything. Sixty percent of their existing users cancelled immediately.
The founders kept going.
The customers who remained were paying because they found real value in the product, not because it was free. The $760 in monthly recurring revenue they were left with after the culling was more valuable as signal than the larger user base they had before: it was proof that someone would pay money for what they had built, which meant the product was solving a real problem rather than just satisfying curiosity.
By early 2015, traction was modest but real. The money was starting to run out, and European investors had uniformly declined to invest. The team’s response to this situation was to fly to San Francisco.
The trip to San Francisco produced two angel investors. The first check was $5,000 from a founder named Davy Kestens. The second came from Michel Meyer, who gave the team the “you’re not the smartest” speech that has been told to every Aircall employee since. Both checks were small in absolute terms and enormous in what they unlocked: momentum, and an introduction from Meyer to the French early-stage fund NewFund.
NewFund came in, and NewFund made a specific recommendation: go to 500 Startups in San Francisco.
The Four Months That Taught Them Everything
500 Startups is an accelerator program. Four months, San Francisco, intense mentorship, exposure to the way Silicon Valley companies thought about growth.
The Aircall founders arrived thinking they were building a business phone system. They left understanding something more specific: integrating Aircall with CRMs and help desks was the key to explosive growth.
This insight deserves unpacking because it’s the strategic decision that separated Aircall from every other cloud telephony company that had tried to replace PBX systems and failed to achieve meaningful scale.
A phone system in isolation is a commodity. Call quality, international numbers, team features, these are table stakes that every provider claimed to offer. But a phone system that lived inside Salesforce, that showed you who was calling before you picked up, that logged every call automatically into your CRM, that synced notes and call recordings to the customer record in HubSpot: that was a different product. That was not a phone system. That was an intelligence layer on top of every customer conversation.
Sales teams using Aircall integrated with their CRM had context before the call started. Support teams using Aircall integrated with Zendesk had the customer’s entire ticket history visible the moment the call came in. The phone call stopped being an isolated event and became part of a continuous record of the customer relationship.
At 500 Startups, the team built an integration every week. Salesforce, HubSpot, Zendesk, Slack, Intercom. Each integration was a new distribution channel: if you were already using Salesforce and Aircall integrated natively with Salesforce, you would find Aircall through the Salesforce App Exchange and through recommendations from other Salesforce users. The CRM and helpdesk ecosystem was the growth engine.
The founders also figured out their target customer during those four months. Not enterprise, where PBX replacements required long sales cycles and legal and IT involvement. Not tiny teams of one or two people, where basic phone forwarding was enough. The sweet spot was SMBs and mid-market companies with 10 to 200 people in sales or customer support, who were sophisticated enough to want integrations with their existing software but agile enough to make purchasing decisions quickly and implement without months of IT involvement.
130 Rejections and the One That Said Yes
After 500 Startups, the team went back to fundraising. They had better traction, clearer strategy, a working integration ecosystem. They still got rejected 129 times before the 130th investor said yes.
The investor that said yes in January 2016 was Balderton Capital, the European venture firm. The seed round of $2.75 million was followed by a $8 million Series A less than a year later, also led by Balderton with participation from FundersClub and FJ Labs. In five months after the Series A closed, the team grew from 5 to 15 people and revenue tripled.
The fundraising history of Aircall tells you something about how the company was built. Each round came when the previous milestone had been clearly hit, and the investors who backed Aircall in early rounds kept coming back. Balderton invested in the seed, led the Series A, and continued investing in subsequent rounds. The Series B in 2018 for $29 million was led by Draper Esprit. The Series C in 2020 for $65 million was led by DTCP with Swisscom Ventures and Adams Street Partners. The Series D in 2021 for $120 million was led by Goldman Sachs Asset Management with the unicorn valuation.
The fundraising cadence was not the breathless quarterly-round rhythm that some venture-backed companies run. It was punctuated by real milestones: revenue targets, customer count targets, geographic expansion. The founders described their approach explicitly: they updated investors on developments regularly, kept them in the loop continuously, and treated fundraising as a relationship-building process rather than a discrete event. When they were ready to raise, the conversations had already been happening.
The New York Move and the Internationalization Strategy
In 2016, Aircall opened an office in New York.
The move was not purely about market access, though the US market was clearly larger than France. It was about calibration: understanding how to build a company at the pace and to the standards that the best global technology companies operated at. The founders had gotten a taste of that at 500 Startups and wanted to be structurally embedded in it rather than visiting.
From the New York base, the team grew from 30 to 100 people in the year after the Series A closed. The growth was faster than anything they had managed in Paris, partly because access to talent was better, partly because proximity to customers made feedback loops tighter, and partly because being physically present in the market you’re selling into changes how you sell.
The internationalization strategy that followed was deliberate and sequenced. The US became the primary growth market. Europe was served from Paris. The APAC region, which required a completely different approach because of timezone, language, and regulatory differences, came later. When Aircall finally decided to build APAC properly, they found a leader who was willing to go all-in: building a team of more than 50 people in 12 months, producing results that the founders described as “massive” and establishing APAC as the company’s third major revenue region within 18 months.
By the Series D in 2021, more than a third of Aircall’s revenue was generated in the United States, and the company had offices in New York, Paris, Sydney, and Madrid. HubSpot joined as an investor in the 2022 funding extension, which was both a financial endorsement and a strategic partnership signal: the company that sold CRM software was betting that the phone system integrated with that CRM was Aircall.
The Integration Flywheel and Why It Compounded
The strategic insight from 500 Startups, that CRM and helpdesk integrations were the key to explosive growth, turned into a product development flywheel that operated for years.
Each new integration opened a new distribution channel. When Aircall built a native integration with Salesforce, it appeared in the Salesforce AppExchange, which was searched by Salesforce users looking for complementary tools. When it built integration with HubSpot, it appeared in the HubSpot App Marketplace. Zendesk, Intercom, Slack, Pipedrive, Freshdesk: each integration was a presence in a marketplace populated by exactly the customers Aircall was trying to reach.
The integration quality created retention. A customer who had built workflows connecting Aircall to their Salesforce CRM, their Zendesk helpdesk, and their Slack workspace had switching costs that a customer using Aircall standalone didn’t have. The more deeply integrated Aircall was into a customer’s stack, the harder it was to replace.
The network of integration partners also provided distribution through partner marketing. HubSpot would highlight Aircall in communications to its user base. Zendesk would feature Aircall in partner content. These placements reached audiences that Aircall’s direct marketing couldn’t efficiently reach, and they carried credibility because they came from a trusted software provider rather than an advertisement.
By the time of the Series D, Aircall had over 100 integrations. By 2025, that number had grown to over 250, covering the full range of tools that sales and support teams used. The integration ecosystem was not an afterthought to the product. It was the product strategy.
The $100M ARR Milestone and What It Took to Get There
When Aircall crossed $100 million in annual recurring revenue in 2022, the founders wrote their founding story publicly. It was a deliberate act of transparency from people who had been operating a “Slack bot that publishes our current MRR every morning” since day one.
The specific narrative choices in that public essay are worth examining because they tell you how the founders understood their own story. They chose the tractor as the symbol: ugly, noisy, slow, never stops. They mentioned that Michel Meyer’s reason for investing was not their smartness. They described the 129 rejections before Balderton said yes. They included the $760 monthly revenue figure after losing 60% of their customers.
These are not the parts of a startup story that the marketing team would typically choose to highlight. They are the parts that made the company actually survive.
Reaching $100 million ARR as a SaaS company took Aircall eight years from founding. That is slow by the standards of the fastest-growing cloud companies of the 2020 era. It is fast by the standards of almost every other company that attempted to rebuild business telephony and either failed entirely or plateaued at small scale.
The reason it happened was the integration insight from 500 Startups, the resilience the tractor metaphor captured, and the specific customer segment they chose to serve: SMBs and mid-market companies with active sales and support teams who needed phone integrated with their existing software stack. That segment is large enough to build a billion-dollar company, specific enough to build a genuinely differentiated product for, and underserved enough that Aircall could win it without competing directly against either the enterprise PBX incumbents or the consumer VoIP players.
The Unicorn, the AI Layer, and What Comes Next
The $120 million Series D in June 2021, led by Goldman Sachs Asset Management, valued Aircall at over $1 billion. France’s 16th unicorn. The first company hatched inside eFounders to reach unicorn status.
The growth metrics at the time of the Series D were concrete: 65% customer growth year-over-year, 8,500 customers worldwide, over a third of revenue from the United States, 450 employees across four offices with plans to hire 260 more before the end of the year.
HubSpot made a strategic investment in Aircall in February 2022, participating in an extension of the Series D. The symbolism of the investment was clear: one of the world’s leading CRM companies was investing in the phone system that integrated most deeply with CRMs. The partnership ratified the integration strategy that had driven Aircall’s growth since 500 Startups in 2015.
The AI layer that Aircall began building in earnest from 2022 onward was the natural next chapter. If the phone system was already living inside your CRM and helpdesk, it had access to context that made AI features dramatically more useful than generic voice AI. Real-time transcription, call summaries, suggested follow-up actions, coaching recommendations based on call performance: all of these were possible because Aircall could combine the voice conversation data with the customer relationship data in the integrated systems.
Aircall AI launched across French, German, and Spanish in 2024, extending the AI capabilities to European markets that were substantial parts of the customer base. AI Voice Agents, announced to handle inbound calls autonomously 24/7, represented the move from AI as a tool that enhanced human conversations to AI as an agent that could handle some conversations independently.
Scott Chancellor, who joined as CEO in 2023 after running Humu and leading divisions at Amazon Web Services and Apptio, brought the operational background to scale a company at the next stage. The founders remained on the leadership team: Olivier Pailhes continuing as a co-founder, Jonathan Anguelov as Chief Sales Officer.
The company has over 20,000 businesses on the platform as of 2025, nine offices across three continents including a new San Francisco location opened in 2024 to mark the tenth anniversary, and over 600 employees from 40 nationalities.
What the Aircall Story Is Really About
The conventional startup story is about genius: a brilliant insight, a first-mover position in an untapped market, an inevitably rising trajectory from founding to IPO.
The Aircall story is about something less cinematic but arguably more reproducible: identifying a real problem, building the minimum version of a solution, charging for it on day one, losing most customers and keeping the ones who actually paid, flying to San Francisco when European investors said no, spending four months at an accelerator figuring out the one thing that changes the growth trajectory, and then grinding forward for eight years.
The perfect storm that the founders identified in 2014, the convergence of cloud telecom infrastructure, WebRTC standardization, and outdated incumbent phone systems, was a real opportunity. But the tractor got there. Not the fastest horse.
Michel Meyer told the team he wasn’t sure they were smart enough and wasn’t sure what they were building. He backed them because he knew they would never give up.
Eight years later, they crossed $100 million in ARR and told the whole story publicly, including the $5,000 check and the 129 rejections and the $760 month. Not because it was a great founding narrative, but because transparency was at the center of their values, and so was the idea that the path to building something real is rarely elegant.
The Slack bot that posts MRR every morning. The tractor. The French founders who flew to San Francisco because European investors said no.
$226 million raised. $1 billion valuation. The 16th French unicorn. Twenty thousand businesses answering their phones through Aircall.
The tractor never stopped.
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