Mattermost hosting
Mattermost is the open-source alternative to Slack and Microsoft Teams – a team chat you control entirely yourself.
Mattermost Hosting Under Your Control
We host Mattermost in a GDPR-compliant way on European infrastructure, so your internal communication runs fast and securely without sensitive conversations sitting on third-party servers. Especially the clean choice for public authorities, healthcare and security-conscious companies.
The essentials of Mattermost hosting
- Mattermost is the open-source alternative to Slack and Microsoft Teams for team chat, which we host GDPR-compliantly on European infrastructure.
- You get channels, direct messages, file sharing and threads – and, self-hosted, decide on retention, access and integrations yourself.
- Self-hosting keeps internal communication under your own control – an advantage SaaS chats inherently lack, since every message there runs over external servers.
- Especially for regulated industries like the public sector and industry, where control over retention and storage location is mandatory, Mattermost is the clean choice.
- We set up Mattermost, connect it to your single sign-on and tools, keep it up to date and provide a dedicated contact instead of an anonymous support portal.
Team chat under your own control
Mattermost offers channels, direct messages, file sharing and threads – the functions teams know from Slack. Self-hosted, you decide on retention, access and integrations yourself instead of following the rules of a SaaS provider.
Data sovereignty
Your communication is often more sensitive than you think. Self-hosted Mattermost ensures that messages and files do not leave your infrastructure – a decisive advantage for regulated industries and security-conscious teams.
Installation & integration
We set up Mattermost production-ready, connect it to your single sign-on and your tools and configure channels and permissions. Via integrations and webhooks Mattermost connects with your existing systems.
Updates & support
We keep Mattermost up to date, apply security updates and back up your data. For questions or incidents you have a dedicated contact instead of an anonymous support portal.
Mattermost in action
Team chat with channels, threads and integrations – on your own servers.
SaaS chat vs. self-hosted Mattermost
Outsourcing internal communication to a SaaS provider means giving up control. This side-by-side shows where self-hosting is structurally superior – regardless of which vendor you compare.
| SaaS chat (e.g. Slack) | Self-hosted Mattermost | |
|---|---|---|
| Data location | Third-party servers (often US) | Own / EU infrastructure |
| GDPR compliance | Limited / SCCs required | ✓ Fully controllable |
| Message retention | Plan-dependent, capped | ✓ Own rules, unlimited |
| Cost as team grows | Rises per user | Infrastructure flat-rate possible |
| Suitability for regulated sectors | ✗ Often insufficient | ✓ Public sector, healthcare |
| Integrations & customisation | Limited to platform | ✓ Open via API & plugins |
The deciding factor is not the feature set, but who controls the data.
From decision to live operation
A cleanly set-up Mattermost hosting follows a clear sequence – from infrastructure selection through to stable ongoing operation with patched updates.
Requirements & infrastructure
User count, compliance requirements and existing systems determine the right server sizing and database structure.
Installation & hardening
Deploy the Mattermost instance, configure TLS, firewall rules and backup strategy – security built in from the start.
Integration with existing tools
Connect LDAP/AD, SSO, Jira, GitLab or custom webhooks so Mattermost fits seamlessly into your workflows.
Migration & onboarding
Transfer existing channels and users, introduce the team – the familiar interface keeps the switchover low-friction.
Ongoing operations & updates
Regular updates, monitoring and backup tests ensure communication stays reliably available at all times.
Each phase closes with a verified state before the next one begins.
What matters for Mattermost hosting
With self-hosted Mattermost, the sensitivity of internal communication is at the centre. Team chats often hold more confidential information than the participants realise, from personnel matters to business strategy. Self-hosting keeps this data under your own control, and that advantage is fundamentally missing from SaaS chats, where every message runs over external servers.
For regulated industries, control over retention and storage location is not a comfort but an obligation. Mattermost is used precisely where data protection and sovereignty are mandatory, from the public sector to industry. Anyone who must meet such requirements needs a tool where retention rules and data location can actually be controlled, rather than left to a provider.
The often underestimated success factor is team acceptance. A chat platform is only useful if it is used, and Mattermost deliberately follows established tools, so the switch succeeds with little onboarding. In the background, solid operation with reliable availability and tested backups decides whether the tool holds up day to day, precisely because communication must work at all times.
Communication is sensitive
Internal chats often contain more confidential information than expected. Self-hosting keeps this data under your own control – an advantage that SaaS chats inherently lack.
Popular in regulated industries
Mattermost is used precisely where data protection and sovereignty are mandatory – from the public sector to industry.
Familiar to use
The interface is modelled on established chat tools, so the switch succeeds with little onboarding for your team.
Mattermost vs. Slack & Microsoft Teams
Slack bills per user per month, Teams sits inside Microsoft 365. Mattermost is open source and runs on your infrastructure – with no message limit. As of June 2026.
| Mattermost (self-hosted) | Slack | Microsoft Teams | |
|---|---|---|---|
| Licence | Open source (Free), €0 | Pro / Business+ | Part of Microsoft 365 |
| Price | Fixed ops, user-independent | $7.25–12.50/user/mo | in the M365 plan (~$12.50/user) |
| Cost (50 users) | Unchanged (fixed fee) | ~$360–625/mo | included in the M365 plan |
| Message history | Unlimited (your database) | Plan-dependent | Plan-dependent |
| Data ownership | Your own EU servers | Vendor cloud (US) | Vendor cloud (US) |
Vendor list prices, as of June 2026 (Slack billed annually). Break-even: from roughly 30–50 users, self-hosted Mattermost is usually cheaper than Slack Business+ – plus full data ownership.
Team chat you control
With us you're always at the forefront of enterprise software development and benefit directly from our extensive development know-how. Together we examine your business processes, identify key optimization potential and develop individually tailored solutions. Your business goals and expectations are the focal point of everything we do.
Comprehensive technological expertise
We choose the stack per project by requirement and rely on established, future-proof technologies instead of niche dependencies.
Specialized in enterprise solutions
The real lever lies in clean interfaces: we integrate deeply into ERP, CRM and third-party systems instead of isolated solutions.
Years of experience in the software industry
From requirements analysis to operation after go-live, we know the pitfalls of large software projects.
Multidisciplinary expert team
Analysis, architecture, backend and operations come together in one team, without friction between disciplines.
Long-term business success
We build maintainable foundations that grow with your company, and stay by your side with support and further development.
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