> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/company/tessi/ # Tessi A information technology and services organization with 10,000 to 25,000 employees. Where it sits among its peers, the technology it runs and how to reach its people. By Enrich.chat Editorial. Updated October 21, 2026. **Short answer:** Tessi (tessi.eu) is an information technology and services organization with 10,000 to 25,000 employees. Its public technology footprint includes Microsoft 365, Microsoft Outlook, Salesforce and NGINX. ## How big is Tessi? Tessi has 10,000 to 25,000 employees. Among the software and technology services companies on this site it sits in the larger half. Each dot in the figure is one of its peers, placed by size; the orange dot is Tessi. **Figure: Where Tessi sits among software and technology services companies.** A strip of dots, one for each of 120 peers in information technology and services, spread from 2,000 to 2,000,000 employees on a log scale. Tessi is highlighted and falls in the 10,000 to 25,000 employees range in the larger half. *Peers in information technology and services placed by employee count on a log scale. Sizes are rounded ranges from public profiles.* Headcount on public company profiles is rounded and moves as a company hires, so use the range as a guide, not as a payroll figure. ## Where is Tessi headquartered? Tessi is headquartered in Grenoble, France. [More software and technology services companies in France](https://enrich.chat/companies-in/france/information-technology-and-services/)[Companies in France](https://enrich.chat/companies-in/france/) ## What industry is Tessi in? Tessi works in [information technology and services](https://enrich.chat/industries/information-technology-and-services/). This group covers software developers, IT consultancies, managed service providers and other firms that build, run and support technology systems. Closest matches on this site: [Hotmart](https://enrich.chat/company/hotmart/), [SONDA](https://enrich.chat/company/sonda/), [Innova Solutions](https://enrich.chat/company/innova-solutions/), [Orange Business](https://enrich.chat/company/orange-business/), [HTC Global Services](https://enrich.chat/company/htc-global-services/) and [Thoughtworks Holding](https://enrich.chat/company/thoughtworks-holding/). ## What technology does Tessi use? We detect 20 tools on Tessi's public footprint across 10 categories, for example Salesforce for marketing automation and crm, NGINX for cloud and hosting and Zendesk for customer support and chat. The figure counts the tools in each category; the groups below name them and link to the companies that use each one. **Figure: Tools detected at Tessi, by category.** A bar chart of how many tools were detected at Tessi in each category: Advertising and retargeting 5, Email and productivity 3, Analytics and tracking 3, Marketing automation and CRM 2, Video and media 2, Cloud and hosting 1, Customer support and chat 1. *Tools detected on the public footprint of Tessi, by category.* ### Marketing automation and CRM [Salesforce](https://enrich.chat/companies-using/salesforce/)[Sendinblue (Brevo)](https://enrich.chat/companies-using/sendinblue/) ### Cloud and hosting [NGINX](https://enrich.chat/companies-using/nginx/) ### Customer support and chat [Zendesk](https://enrich.chat/companies-using/zendesk/) ### Email and productivity [Microsoft 365](https://enrich.chat/companies-using/microsoft-365/)[Microsoft Outlook](https://enrich.chat/companies-using/microsoft-outlook/)[SendGrid](https://enrich.chat/companies-using/sendgrid/) ### CDN and security [Sophos](https://enrich.chat/companies-using/sophos/) ### Website platforms and CMS [WordPress (self-hosted)](https://enrich.chat/companies-using/wordpress-org/) ### Analytics and tracking [Google Tag Manager](https://enrich.chat/companies-using/google-tag-manager/)[Google Analytics](https://enrich.chat/companies-using/google-analytics/)[Hotjar](https://enrich.chat/companies-using/hotjar/) ### Advertising and retargeting [DoubleClick](https://enrich.chat/companies-using/doubleclick/)[DoubleClick Conversion Tracking](https://enrich.chat/companies-using/doubleclick-conversion/)[Google Dynamic Remarketing](https://enrich.chat/companies-using/google-dynamic-remarketing/)[LinkedIn Marketing Solutions](https://enrich.chat/companies-using/linkedin-marketing-solutions/)[Google Ads Conversion Tracking](https://enrich.chat/companies-using/google-adwords-conversion/) ### Video and media [Vimeo](https://enrich.chat/companies-using/vimeo/)[YouTube](https://enrich.chat/companies-using/youtube/) Tools change as companies adopt and drop them. Check a single company at any time with the free [tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/). ## Which companies are most like Tessi? These are the closest matches among the software and technology services companies on this site. Each is compared on the business tools it runs (a rarer tool says more than a common one), how close its size is and, when both are known, where it is based. The second column says why it matched and gives its size range. | Company | Why it matches | | --- | --- | | [Hotmart](https://enrich.chat/company/hotmart/) | Shares Salesforce, Sendinblue and NGINX; same size range. 10,000 to 25,000 employees | | [SONDA](https://enrich.chat/company/sonda/) | Shares Salesforce, Sendinblue and SendGrid; same size range. 10,000 to 25,000 employees | | [Innova Solutions](https://enrich.chat/company/innova-solutions/) | Shares Salesforce, Zendesk and SendGrid; same size range. 10,000 to 25,000 employees | | [Orange Business](https://enrich.chat/company/orange-business/) | Shares Salesforce, Sendinblue and Zendesk; a larger company. 25,000 to 50,000 employees | | [HTC Global Services](https://enrich.chat/company/htc-global-services/) | Shares Salesforce and SendGrid; same size range. 10,000 to 25,000 employees | | [Thoughtworks Holding](https://enrich.chat/company/thoughtworks-holding/) | Shares Salesforce, NGINX and Zendesk; same size range. 10,000 to 25,000 employees | | [Agoda](https://enrich.chat/company/agoda/) | Shares Salesforce, NGINX and Zendesk; same size range. 10,000 to 25,000 employees | | [Blinkit](https://enrich.chat/company/blinkit/) | Shares Zendesk and SendGrid; same size range. 10,000 to 25,000 employees | To build a longer list of accounts like Tessi, with the people who run their software, ask your AI agent: ```text Use www.enrich.chat to find software and technology services companies that run Salesforce and Zendesk, like Tessi, and the CTOs, CIOs and heads of engineering at each, with titles and verified work emails ``` ## How do I find the right people at Tessi? Start from the website, tessi.eu. Enter it in the free email finder with a name, or ask your AI agent for the people in the roles you sell to, such as CTOs, CIOs and heads of engineering. ```text Use www.enrich.chat to find the CTOs, CIOs and heads of engineering at tessi.eu, with titles and verified work emails ``` Not sure how addresses are written at Tessi? The free [email format finder](https://enrich.chat/tools/email-format-finder/) shows the pattern for tessi.eu. ## Which other companies use the same tools? See who else runs the tools Tessi uses: [Microsoft 365](https://enrich.chat/companies-using/microsoft-365/)[Microsoft Outlook](https://enrich.chat/companies-using/microsoft-outlook/)[Vimeo](https://enrich.chat/companies-using/vimeo/)[YouTube](https://enrich.chat/companies-using/youtube/)[WordPress (self-hosted)](https://enrich.chat/companies-using/wordpress-org/)[DoubleClick](https://enrich.chat/companies-using/doubleclick/) ## Frequently asked questions ### How many employees does Tessi have? Tessi is in the 10,000 to 25,000 employees range on its public company profile. Headcounts are rounded and change as companies hire, so treat the range as a guide. ### What industry is Tessi in? Tessi works in information technology and services. This group covers software developers, IT consultancies, managed service providers and other firms that build, run and support technology systems. ### What technology does Tessi use? Tools detected on its public footprint include Microsoft 365, Microsoft Outlook, Salesforce and NGINX, across 10 categories. A detected tool shows it was seen, not what Tessi pays for it. ### Where is Tessi headquartered? Tessi is headquartered in Grenoble, France. ### What companies are similar to Tessi? The closest matches on this site are Hotmart, SONDA and Innova Solutions. They are compared on the business tools they run, their size and where they are based; the profile above lists the reasons. ### What is the website of Tessi? Tessi's website is tessi.eu. Staff email usually uses a domain like it, so check the pattern with the free email format finder before you write to anyone. ## Try this prompt Find people at Tessi ```text Use www.enrich.chat to find the CTOs, CIOs and heads of engineering at tessi.eu, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Hotmart](https://enrich.chat/company/hotmart/) - [SONDA](https://enrich.chat/company/sonda/) - [Innova Solutions](https://enrich.chat/company/innova-solutions/) - [Orange Business](https://enrich.chat/company/orange-business/) - [HTC Global Services](https://enrich.chat/company/htc-global-services/) - [Thoughtworks Holding](https://enrich.chat/company/thoughtworks-holding/) - [Agoda](https://enrich.chat/company/agoda/) - [Blinkit](https://enrich.chat/company/blinkit/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)