Redmine Integrations: Slack, Teams, Webhooks & API (2026)

Redmine rarely works alone.

Most teams use it alongside communication tools, source-code repositories, email, authentication systems, automation platforms, and other applications. The challenge is keeping information connected without making people copy updates from one system to another.

Redmine provides several ways to connect with other tools, including its REST API, webhooks, repository integrations, email, LDAP authentication, and plugins.

This guide explains the main Redmine integrations, what works out of the box, where plugins are useful, and which integrations make sense for different workflows.

What Integrations Does Redmine Support?

Redmine can connect with external systems in several ways. Its REST API lets applications read and modify Redmine data programmatically. Repository integration connects project activity with source-code repositories, while email can handle notifications and incoming issue requests. LDAP can be used for directory-based authentication. Redmine 7.0 also introduced native webhook triggers, giving external systems a way to receive event-based updates from Redmine.

For tools such as Slack and Microsoft Teams, teams can use plugins to extend Redmine’s notification capabilities.

Redmine Integration Options at a Glance

The important distinction is simple: Redmine provides the core integration infrastructure, while plugins can extend it for specific communication and workflow requirements.

Redmine REST API

The Redmine REST API is one of the most flexible ways to connect Redmine with another application.

It provides programmatic access to resources such as issues, projects, users, time entries, wiki pages, versions, attachments, and custom fields. According to Redmine’s REST API documentation, the API supports both JSON and XML.

Authentication can use an API key, which is generally preferable to putting a personal password into an integration script.

What Can You Do With the Redmine API?

For example, an organization can use the API to:

• Create or update Redmine issues
• Retrieve project information
• Pull time-entry data into another system
• Build a custom project dashboard
• Synchronize Redmine with internal applications
• Automate repetitive project-management tasks

The API is especially useful when a ready-made plugin doesn’t provide the exact integration a team needs.

Redmine Webhooks

Webhooks work differently from an API.

With an API, another application asks Redmine for information. With a webhook, Redmine can send an event to an external system when a configured action occurs.

Redmine 7.0 introduced native webhook triggers for external systems. The release was published on June 30, 2026, and webhooks were one of its major additions. If you’re not on 7.0 yet, our Redmine 7.0 upgrade guide covers the move.

API vs. Webhooks

• API: An external application requests information from Redmine.
• Webhook: Redmine sends information to an external system when a relevant event occurs.

Using both can create more responsive automation. For example, a webhook could notify an external service that an issue changed, while the service uses the API to retrieve additional project information.

Slack Integration for Redmine

Slack is commonly used alongside project-management systems, but Slack notifications aren’t part of Redmine’s core communication workflow.

A notification plugin can connect Redmine with Slack and route selected project events to the channels where teams already communicate.

With the Redmineflux Notification plugin, teams can connect Redmine to Slack using a Slack Bot Token and configure a default channel or project-specific channels.

Depending on the configuration, notifications can include:

• New issues
• Assignments
• Comments
• Status changes
• Priority changes

This means developers and project managers can see important Redmine updates without constantly switching between applications. For setup detail, see our Redmine notification plugin guide.

Microsoft Teams Integration for Redmine

Teams users can follow a similar approach.

The Redmineflux Notification plugin can use an incoming webhook to send Redmine updates to Microsoft Teams. Organizations can configure a global webhook or separate webhooks for individual projects.

Project-specific routing can be useful when several teams work in the same Redmine instance. Instead of sending every update to one channel, notifications can be directed to the people who actually need them.

Connect Redmine to Your Team. Send project updates where your team works. Explore RedmineFlux →

Browser and In-App Notifications

Not every update needs to reach Slack or Microsoft Teams.

For teams that spend most of their working day inside Redmine, real-time in-app or browser notifications can be more convenient.

The Redmineflux Notification plugin uses Faye for real-time notifications and can notify users about events such as:

• Issues added or updated
• Notes added
• Status changes
• New assignments
• Priority changes
• Target-version changes

The plugin can also avoid notifying the person who performed the action about their own update, helping reduce unnecessary notification noise.

Git and Repository Integration

Redmine can connect project management with source-code repositories.

Its repository support includes systems such as:

• Git
• Subversion
• Mercurial
• Other supported version-control systems

Once a repository is connected, repository activity can appear within the relevant Redmine project. Commit messages that reference Redmine issue IDs can also be associated with those issues.

For development teams, this creates a useful connection between what needs to be done and what has actually been changed in the code.

Redmine Email Integration

Email is still useful for teams that receive requests through an inbox.

Redmine can send email notifications when issues change. It can also be configured to receive emails for creating or commenting on issues, making email useful as an issue-intake channel.

For example, a support team can turn incoming requests into trackable Redmine issues rather than keeping work buried inside an email thread.

Connecting AI Assistants to Redmine With MCP

AI assistants are becoming another way teams interact with business data.

Redmineflux provides MCP-ready infrastructure for connecting AI assistants with Redmine data. Through the Model Context Protocol, supported assistants such as Claude, ChatGPT, and Microsoft Copilot can be connected to Redmine workflows. Learn more on our Redmine MCP page.

Potential use cases include:

• Finding project information
• Summarizing project activity
• Reviewing open issues
• Supporting reporting workflows
• Interacting with project data through natural-language requests

For teams experimenting with AI-assisted project management, MCP provides another layer between Redmine data and AI-powered workflows.

Which Redmine Integrations Should You Set Up First?

You don’t need to connect every tool your organization uses. Start with the integrations that remove the most repetitive work.

For development teams

Start with Git + API/Webhooks. This keeps code activity connected to project tracking and provides a foundation for automation.

For teams using Slack or Teams

Start with communication notifications. Send only important events rather than every Redmine activity.

For support teams

Consider email integration. It can help turn incoming requests into trackable issues.

For automation-heavy workflows

Use the REST API + webhooks. The API handles data access while webhooks can trigger actions when events occur.

For AI workflows

Explore MCP-based connections where appropriate.

The goal isn’t to connect everything. It’s to connect the tools that eliminate unnecessary manual work.

Common Redmine Integration Mistakes to Avoid

Sending Too Many Notifications

If every Redmine event appears in Slack or Teams, important updates can quickly get buried. Only send notifications that people actually need.

Using One Channel for Everything

Separate channels or project-specific routing can make large Redmine installations easier to manage.

Ignoring Webhooks

If you’re running Redmine 7.0 or later, native webhooks can provide an event-driven alternative to repeatedly polling the API.

Hard-Coding Passwords

Use appropriate authentication methods such as API keys rather than embedding personal passwords in integration scripts.

Keeping Code and Issues Separate

When repository activity isn’t connected to project tracking, developers and project managers may have to look in separate places to understand progress.

Redmine Integrations: Frequently Asked Questions

Does Redmine integrate with Slack?

Yes, Slack integration can be added through a notification plugin. Redmineflux’s Notification plugin can connect Redmine with Slack using a Slack Bot Token and send selected project events, such as new issues, assignments, comments, and status changes, to configured channels.

Does Redmine support webhooks?

Yes. Native webhook triggers were introduced in Redmine 7.0, released in June 2026. Webhooks let Redmine send events to external systems when relevant changes occur, which removes the need to repeatedly poll the API.

Does Redmine have a REST API?

Yes. Redmine provides a REST API for accessing and modifying supported resources such as issues, projects, users, and time entries. The API supports both JSON and XML, and can use an API key for authentication.

Can Redmine integrate with Microsoft Teams?

Yes. A notification plugin can connect Redmine with Microsoft Teams using an incoming webhook. Organizations can configure a global webhook or separate webhooks for individual projects.

Can Redmine integrate with Git?

Yes. Redmine supports repository integration with Git and other version-control systems, allowing repository activity to be displayed within projects and commits to be linked to issues.

Connect Redmine to the Tools Your Team Already Uses

Redmine becomes more useful when it fits naturally into the rest of your team’s workflow.

Use the REST API and webhooks for automation, connect Git and repositories to bring development activity closer to project tracking, use Slack or Microsoft Teams for team notifications, and use email where incoming requests need to become trackable issues.

The right integrations should reduce manual work, keep information connected, and make it easier for teams to focus on the work itself.

Want to extend what Redmine can do? Explore the Redmineflux plugin suite, built for modern Redmine workflows.