Mattermost

About Mattermost

Deep Dive with Clara AI

Mattermost provides secure, open-source collaboration software that enhances both safety and productivity for organizations. Users maintain full ownership and control over their intellectual property and customer data, all protected behind their own firewall or VPN. This powerful defense prevents security breaches, vendor lock-in, and expensive technical debt. Teams will experience flexible, focused, and resilient collaboration, staying connected precisely when it counts. This self-hosted, AI-powered collaborative platform is perfect for defense, intelligence, security, and critical infrastructure enterprises. Minimize disruptions with secure messaging, file sharing, and customizable notifications across all devices, streamlining both real-time and asynchronous work. Boost efficiency by automating workflows, reducing manual efforts, and ensuring consistent execution. Seamlessly integrate with Mattermost channels to automate actions and keep team members instantly updated. Facilitate real-time, remote sharing of sensitive information with fully sovereign audio calls and screensharing, integrated directly into mission environments. Securely transcribe and summarize call recordings using both first-party and third-party AI. Enhance workflow continuity with issue tracking and Kanban-style task management, all integrated with channel and messaging workflows for superior planning and management. Connect Mattermost to sovereign LLMs, custom instructions, and open APIs for customizable, AI-driven automation and assistance within collaboration workflows, all while maintaining full data control in on-premises and sovereign cloud deployments.

Screenshots & Videos

Pricing

Free Trial Not Available
Starts at $10.0. Offers Custom plan.
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SW Score Breakdown The SW Score breakdown shows individual score for product features.Read more

Features The Feature Score % is calculated using the weighted average method, where core features hold more weight in the final calculation. Read more

84%
Reviews

60%
Momentum

66%
Popularity

68%

Platforms Supported

Browser Based (Cloud)
Mobile App (Android, iOS)
Desktop App (Windows, Mac)

Organization Types Supported

All (Small, Medium, Large)

API Support

Available

Modes of Support

Online

Mattermost Features

Show Feature Explanation

Show Missing Features

Business Instant Messaging Features

Features: The Feature Score % is calculated using the weighted average method, where core features hold more weight in the final calculation. Read more

84%

@Mentions

Receive instant alerts for tagged mentions and direct messages.

Security and Encryption

Protect your communications with powerful encryption, ensuring security both end-to-end and during transit.

Message History and Archiving

Long-term retention of conversation data.

Cross-Platform Access

Available on web, desktop, and mobile platforms.

Message Search

Search past conversations using keywords.

Presence Indicators

Online, offline, away, or busy—status options that keep you connected and in control.

Direct Message

Private messaging directly between users.

File Sharing

A simple way to share files instantaneously with the team

External User Access

Controlled access for people outside the workspace or organization

Message Catch Up

Helps to view your latest unread messages across board instantly with ease

AI Summary

AI-Powered Native Summarization

Message Scheduling

Set future delivery times for messages

Emojis and Reactions

Built-in visual reactions

Group Chat

Direct chat between more than two users

Video Calling

Video calls to allow better discussion and exchange of ideas

Channels and Spaces

Public or private spaces for team communication

Discussion Threads

Helps in ensuring collaboration and exchange of views pertaining to a specific topic through comment posts

Screen Sharing

Enables remote participants to see your desktop that allows better collaboration

Multi-language Support

Available in multiple languages to support global customers

Cloud Storage

Provides an online storage space to store data

Mattermost Pricing

Free Trial

Not available

Pricing Options

Premium Plans ( Subscription / Quotation Based )

Professional $10.00 $10.00 per user / month

$10 per User per Month billed Yearly

For Chat Operations

Features

Messaging, file sharing, and link and file previews across device platforms
1:1 audio calls and screen sharing
Threaded discussions
Core search up to 3 million posts
Custom branding, themes, and emojis
Hashtags
Channel Categorization
Available in 20 languages
Compact View
Markdown compatibility
Message priority
Persistent notifications
Group calling and screen share
Guest accounts
Custom user groups
System-wide notifications
Multifactor authentication
Single sign-on
AD/LDAP user sync
Advanced access controls
Interactive AI bot support
Bring-your-own & multi-LLM integration
Agent control plane
Integrations platform
Operational and DevOps integrations
Community Support
Professional Support

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Enterprise Custom

For Secure Collaborative Workflows

Features

Includes features of Professional plan, plus
Sovereign AI
Contextual summarization and composition
Real-time channel briefing
Agent control plane
Advanced Logging
Calls with live-text transcription & AI summaries
Video Integrations
Microsoft Teams messaging integration
FIPS 140-3 Compliant
STIG-hardened image for DoD information assurance standards
Collaborative playbooks
Workflow dashboards
Role Based granular Access Controls
AD/LDAP group, channel, and team sync
Delegated granular administration
Data retention policy
Legal hold
Compliance export and eDiscovery automation
High availability cluster-based deployment
Enterprise search (3M+ posts)
Supported Kubernetes deployment
Scale to 50,000 concurrent users
Boards - Kanban-style Project Management
Enterprise Mobility Management (AppConfig) support
Private mobility with ID-only push notifications
Enterprise Support
Premier Support

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Enterprise Advanced Custom

For Multi-Domain Secure Operations

Features

Includes features of Enterprise plan, plus
Mobile Biometrics
Mobile Data-at-Rest Encryption
Mobile Screenshot Prevention
Mobile Jailbreak / Root Detection
Air-gapped Deployment
DDIL Microsoft Teams app
Offline operation and smart resync
Scale to 200,000 concurrent users
Dedicated write-through caching
Dynamic Attribute Based Access Controls
Zero Trust Channel Access
Channel Banners
Premier Support
U.S. Based Premier Support

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Screenshots of Vendor Pricing Page

Disclaimer: The pricing details were last updated on 16/09/2025 from the vendor website and may be different from actual. Please confirm with the vendor website before purchasing.

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Mattermost Reviews

User Rating

4.5/5 (Based on 514 Ratings)

Rating Distribution

Excellent
58.4%
Very Good
33.1%
Average
5.3%
Poor
1.6%
Terrible
1.8%

Do You Use Mattermost?

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Review Summary

User reviews of Mattermost highlight its strengths as a self-hosted, open-source Slack alternative, particularly for teams that prioritize data security and control. Users praise its ease of use, robust file-sharing features, and integration with tools like GitLab and Jira. However, some users express concerns about the mobile app's stability, limited search functionality, and the absence of built-in video conferencing. While Mattermost offers a powerful platform for internal communication, addressing these limitations would further enhance its user experience.

Pros

Mattermost is an opensource platform providing secure communication, collaboration, and workflow orchestration.
The platform is userfriendly, making it easy to learn and operate.
Offers a riskfree trial period for 30 days, allowing users to try the platform before making a purchase.

Cons

Some users found the platform to be a bit expensive.
The platform's loading rate and ability to open dialog interfaces instantly can be subpar.
It lacks an integrated video conferencing feature within the application.

Mattermost Reviews

AI-Generated from the text of User Reviews

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