Insights

Expansion Opportunity Sellsy has recently been acquired by TeamSystem and is active in France and Spain, signaling expansion potential in European markets and opportunities to cross-sell CRM, invoicing, and FMS capabilities to a broader SME customer base.

Acquisition Signals The 2025 acquisition by TeamSystem suggests a buying cycle influenced by consolidation in SME software; leverage channel partnerships, integration opportunities, and joint go-to-market motions to access a larger addressable market.

Integrated Suite Sellsy combines CRM, invoicing, and pre-accounting with recent add-ons like RocketChart, indicating a strong foothold for upsell into more comprehensive financial management workflows for SMBs.

Tech & Security With a modern tech stack including React, analytics, and security measures (HSTS, Cloudflare Bot Management), position as a trustworthy platform for security-conscious SMEs and corporate buyers prioritizing data protection.

Growing Base Serving around 22,000 customers with 200 employees, Sellsy demonstrates scalability and a proven SMB focus, presenting a ripe opportunity for mid-market upsell, expansion of usage across departments, and enterprise-grade implementations.

Sellsy Tech Stack

Sellsy uses 8 technology products and services including Mixpanel, Microsoft Clarity, React, and more. Explore Sellsy's tech stack below.

  • Mixpanel
    Analytics
  • Microsoft Clarity
    Analytics
  • React
    Javascript Frameworks
  • Highcharts
    Javascript Graphics
  • HSTS
    Security
  • Cloudflare Bot Management
    Security
  • Apache
    Web Servers
  • Facebook
    Widgets

Sellsy's Email Address Formats

Sellsy uses at least 1 format(s):
Sellsy Email FormatsExamplePercentage
FLast@sellsy.comJDoe@sellsy.com
77%
Last@sellsy.comDoe@sellsy.com
17%
First@sellsy.comJohn@sellsy.com
5%
FL@sellsy.comJD@sellsy.com
1%

Frequently Asked Questions

What is Sellsy's official website and social media links?

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Sellsy's official website is sellsy.com and has social profiles on LinkedInCrunchbase.

What is Sellsy's NAICS code?

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Sellsy's NAICS code is 5112 - Software Publishers.

How many employees does Sellsy have currently?

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As of July 2026, Sellsy has approximately 172 employees across 5 continents, including EuropeNorth AmericaAsia. Key team members include Ceo: V. D.Cmo: M. J.Chief Product Officer: C. P.. Explore Sellsy's employee directory with LeadIQ.

What industry does Sellsy belong to?

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Sellsy operates in the Software Development industry.

What technology does Sellsy use?

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Sellsy's tech stack includes MixpanelMicrosoft ClarityReactHighchartsHSTSCloudflare Bot ManagementApacheFacebook.

What is Sellsy's email format?

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Sellsy's email format typically follows the pattern of FLast@sellsy.com. Find more Sellsy email formats with LeadIQ.

How much funding has Sellsy raised to date?

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As of July 2026, Sellsy has raised $73M in funding. The last funding round occurred on Jan 11, 2022 for $63M.

When was Sellsy founded?

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Sellsy was founded in 2009.
Sellsy logo

Sellsy

Software DevelopmentNouvelle-Aquitaine, France51-200 Employees

Sellsy provides an integrated software platform that merges customer relationship management, invoicing, and pre-accounting to support everyday business management and client interactions. The tool is designed as a collaborative environment that helps marketing, sales, and administrative teams work together more effectively. Based in La Rochelle, Nouvelle-Aquitaine, France, Sellsy was founded in 2009 by Frédéric Coulais and Alain Mevellec. The company serves around 22,000 customers and operates with a mid-sized team focused on delivering its solutions. In 2025, Sellsy was acquired by TeamSystem S.p.A., expanding its footprint in France and Spain.

Section iconCompany Overview

Website
sellsy.com
NAICS Code
5112 - Software Publishers
Founded
2009
Employees
51-200

Section iconFunding & Financials

  • $73M

    Sellsy has raised a total of $73M of funding over 6 rounds. Their latest funding round was raised on Jan 11, 2022 in the amount of $63Mas a private_equity.

  • $1M$10M

    Sellsy's revenue is estimated to be in the range of $1M$10M

Section iconFunding & Financials

  • $73M

    Sellsy has raised a total of $73M of funding over 6 rounds. Their latest funding round was raised on Jan 11, 2022 in the amount of $63Mas a private_equity.

  • $1M$10M

    Sellsy's revenue is estimated to be in the range of $1M$10M

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