Zextras Services

What Zextras Services does

Zextras Services is a French software and professional services company, headquartered in Tours and operating as the wholly-owned French subsidiary of Italian parent Studio Storti. The company provides Carbonio (and, historically, Zextras Suite for Zimbra Open Source), an open-source collaborative messaging and email platform positioned as a sovereign alternative to Microsoft 365 and Google Workspace. Carbonio is offered in two deployment models: Carbonio Cloud, a pay-per-use SaaS hosted on French infrastructure, and Carbonio On Premise, a self-hosted bundle that includes audited updates, 24/7 monitoring, migration/installation services and unlimited operational support. Both products ship with built-in anti-spam and antivirus security and are marketed as GDPR/RGPD-compliant.

Zextras Services monetizes through three streams: recurring Carbonio Cloud SaaS subscriptions (pay-per-use), facilitation of Zextras and Carbonio software licenses, and a heavy professional services layer covering consulting, installation, deployment, migration, audit, training/skills transfer and ongoing maintenance en conditions opérationnelles (MCO). Pricing is quote-based and not publicly disclosed. The company reports 400+ clients and 10+ years of domain experience in Zimbra-based collaborative solutions.

The primary customer base consists of French public administrations and French healthcare organizations. Distribution is exclusively France-focused and combines a direct sales team with vendor referencing through three major French public procurement frameworks: UGAP (central government), RESAH and CAIH (hospital and healthcare IT). The company's stated geographic footprint is single-country (France), and in 2020 it executed a strategic product pivot from Zextras Suite / Zimbra Open Source support toward Carbonio as its primary platform. Zextras Services operates with 11–50 employees, paid-up capital of €80,000, no disclosed external funding and no disclosed revenue.

Name

Zextras Services

Legal name

Zextras Services

Website

https://zextras-services.fr

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

11–50 employees

Short description

Zextras Services is the French subsidiary of Studio Storti that provides Carbonio, an open-source collaborative messaging and email platform available as cloud SaaS or on-premise software, serving 400+ French public-sector and healthcare organizations seeking sovereign alternatives to Microsoft 365 and Google Workspace.

Ownership category

akta.pro rank

Product category

Collaborative Messaging Software

NAICS

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (518), Computer Systems Design and Related Services (54151)

SIC

Services-Prepackaged Software (7372), Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro primary industry

Community/Group Chat Platforms (BPAMACAH)

Keywords

• Collaborative messaging software
• Cloud email hosting
• On-premise email platform
• Zimbra support services
• Email migration services

Headquarters

HQ city

Tours

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Infrastructure, Operations, Marketing or Sales

Revenue model

1. Carbonio Cloud SaaS Subscription: Pay-per-use SaaS subscription model for Carbonio Cloud, providing messaging and collaboration services with the convenience of cloud delivery, no upfront investment, and managed infrastructure responsibility. Hardware and software maintenance, storage, and related responsibilities fall under the service provider.
2. Professional Services: Comprehensive professional services including consulting, installation, deployment, migration, audit, skills transfer, training, and operational maintenance (MCO). Services are delivered locally in French and either on-site or remotely.
3. Software Licenses: Zextras and Carbonio license facilitation, where Zextras Services acts as an integrator providing objective consulting to match offerings with customer needs.

Go-to-market motion1 record

Distribution channels5 records

Marketing channels4 records

Core offering

Zextras Services sells and supports collaborative messaging platforms for French organizations, centered on Carbonio and Zextras Suite as open-source alternatives to Microsoft 365 and Google Workspace. It offers cloud-hosted and on-premise deployment options, plus consulting, installation, migration, licensing assistance, training, and ongoing operational support for messaging administrators.

Product overview

Zextras Services offers a unified messaging and collaboration platform portfolio centered on Carbonio, available as either a cloud-hosted SaaS solution (Carbonio Cloud) or self-hosted on-premise deployment (Carbonio On Premise). Both products provide secure email, collaboration tools, and regulatory compliance for French organizations. Additionally, the company provides professional services for Zimbra Open Source users including installation, migration, training, and ongoing operational maintenance, representing a transition from legacy Zimbra support to the Carbonio platform beginning in 2020.

Differentiator

Problem solved

Functional benefit

Brands

• Carbonio: Open source collaborative messaging and productivity suite offered as Cloud SaaS or On Premise solution, serving as an alternative to Microsoft 365 and Google Workspace
• Carbonio Cloud
• Carbonio On Premise

Products and services

• Carbonio Cloud
• Carbonio On Premise
• Zimbra Open Source Support Services

Named customers2 records

Segments3 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Four partnerships are on record, tiered core and flagship.

• UGAP (Union des Groupements d'Achats Publics)coreChannel Partner/ Reseller/ DistributorZextras Services is referenced as an approved vendor through UGAP, the French central purchasing body. This enables public administrations to procure Carbonio messaging solutions through established government procurement channels, providing credibility and streamlined purchasing processes for French government agencies.
• RESAH (Réseau des Acheteurs Hospitaliers)coreChannel Partner/ Reseller/ DistributorReferenced through RESAH for healthcare sector messaging solutions, enabling hospital networks and healthcare organizations to access Carbonio collaborative messaging through the healthcare procurement channel.
• CAIH (Centrale d'Achat de l'Informatique Hospitalière)coreChannel Partner/ Reseller/ DistributorReferenced through CAIH for hospital IT procurement, providing access to French healthcare institutions seeking secure, sovereign messaging solutions compliant with healthcare data requirements.
• Studio StortiflagshipStrategic or Co-development PartnerZextras Services is the French subsidiary of Studio Storti, the integrator with the most references in Zimbra collaborative solutions in Europe. Studio Storti develops Carbonio and Zextras Suite as the exclusive developer for Zimbra Open Source. Zextras Services represents the group in France with exclusive development rights and local market focus.

Scale indicators2 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• IceWarp: European email and team collaboration server offering both cloud and on-premise messaging, directly overlapping with Carbonio's positioning as a unified, sovereign alternative to hyperscaler suites.
• Zimbra (Synacor): The upstream Zimbra collaboration platform on which Zextras Services' products are built; commercial editions of Zimbra are sold directly by Synacor to overlapping public-sector and enterprise customers.
• BlueMind: French open-source messaging and collaboration platform targeting the same French public-sector and enterprise buyers as Zextras Services, with comparable sovereignty and on-premise deployment positioning.
• Open-Xchange: European open-source email and collaboration suite (OX App Suite) competing head-to-head with Carbonio as an alternative to Microsoft 365 and Google Workspace for ISPs, telcos, and public-sector customers.

Emerging players

• Nextcloud: Open-source collaboration suite with integrated mail, files, chat, and office functionality; increasingly positioned for European public-sector buyers seeking sovereign, self-hosted alternatives to US productivity suites.
• Kolab Systems: Open-source email, calendaring, and collaboration provider offering hosted and on-premise deployments, with overlapping sovereign messaging positioning for European public-sector and privacy-sensitive buyers.
• Kopano: Open-source groupware and email platform offering on-premise and hosted deployments to European organizations, competing for the same sovereign messaging and collaboration use cases as Carbonio.

Broad incumbents

• HCL Domino: Established enterprise messaging and collaboration platform (formerly IBM Notes/Domino) widely deployed in large public-sector and regulated organizations — the same buyers Zextras Services targets with Carbonio On Premise.
• Microsoft 365: The dominant hyperscaler productivity suite that Carbonio is explicitly positioned against; its bundled collaboration, security, and AI features set the competitive baseline that any sovereign alternative must beat.
• Google Workspace: Major hyperscaler productivity and collaboration suite cited by Zextras Services as a primary alternative its customers are moving away from due to sovereignty and RGPD concerns.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/ZextrasServices
• LinkedInlinkedin.com/company/zextras-services

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Zextras Services