How to Send GitHub Notifications to Microsoft Teams (and Slack) Simultaneously

GitHub's Multi-Platform Notification Problem

GitHub supports both Slack and Microsoft Teams as notification destinations. The GitHub app for Slack is well-maintained and handles pull request reviews, CI status, issue comments, and deployment events. GitHub also has a Teams app with similar coverage.

The structural problem is the same one that affects most native integrations: each destination requires separate configuration per repository. For an engineering organization with 20 repositories, connecting them to both Slack and Teams means 40 subscriptions — 20 for Slack, 20 for Teams. When you add a new repository, it must be connected to both. When a notification rule changes, it must be updated in both.

For post-M&A engineering organizations where one team uses Slack and another uses Teams, this duplication extends further: engineering leadership needs notifications in Teams, developers need them in Slack, and some repositories need to notify both audiences simultaneously.

GitHub's Native Apps and Webhook System

The GitHub app for Slack and the GitHub app for Teams are the supported way to get repository events into each platform. Both are subscribed per channel with a /github subscribe owner/repo [features] command, and both let you narrow the features (pulls, issues, deployments, releases, workflows) per channel.

Every GitHub repository and organization also supports outbound webhooks. GitHub fires webhook events for: push, pull_request, pull_request_review, issues, issue_comment, workflow_run, deployment_status, release, create, and delete. These can be configured at the repository level (Settings → Webhooks → Add webhook) or at the organization level (Organization → Settings → Webhooks) for all repos simultaneously. If you use raw webhooks, the target has to be something that posts into the destination platform: a Teams Workflows or incoming-webhook flow, a Slack incoming webhook, or a relay you host. SyncRivo is not a webhook target — it has no inbound endpoint for GitHub events and does not route payloads.

Setup:

1. Install the GitHub app in Slack and in Teams (each requires an admin on that platform).
2. In each developer Slack channel, run /github subscribe owner/repo pulls reviews workflows.
3. In each stakeholder Teams channel, run /github subscribe owner/repo deployments releases.
4. When a repository is added, subscribe it in both places. Keep the subscription list in a short doc so the two do not drift.

GitHub Events by Audience

Pull request opened: Slack for the development team. Engineers reviewing PRs work in Slack — direct notification to the review channel eliminates the need to watch GitHub notifications.

Pull request merged: Slack #deployments, and optionally Teams if the merge is into a protected release branch.

Workflow run failed (CI/CD failure): Slack #engineering with urgency. Failed CI on a main branch affects everyone; failed CI on a feature branch is scoped to the PR author. Use per-channel feature filters to keep noise down.

Deployment status (succeeded/failed): Both Slack and Teams. Engineers need to know deployments succeeded; product managers and stakeholders in Teams need to know new releases are live. This is one of the highest-value cross-platform events — the audience spans technical and non-technical teams.

Release published: Teams for product and business stakeholders who track feature releases. Slack for engineers who need deployment context.

Security alert (Dependabot, secret scanning): A dedicated Slack security channel and a Teams channel for security-conscious stakeholders or the CISO.

Where SyncRivo Fits (and Where It Doesn't)

SyncRivo does not relay messages posted by bots or apps, so a GitHub app post in Slack is not copied to Teams by SyncRivo and vice versa. Each channel gets its own subscription.

What SyncRivo bridges is the human conversation. Connect Slack #engineering to Teams #engineering, and the discussion about a failed deployment or a release — who is investigating, whether it ships today, what the customer-facing note says — is visible on both platforms, in both directions, with threads, edits, files, and @mentions kept in sync. Developers stay in Slack; leadership and product stay in Teams.

For the GitHub app subscription reference, see the GitHub Notifications in Slack & Teams integration guide.