Connect Slack channels to Microsoft Teams channels with real-time two-way messaging. No migration, no app switching, no complex workflows to build.
Your team uses Slack. Your clients, partners, or other departments use Microsoft Teams. Neither side wants to switch. Communication falls back to slow email threads and forwarded screenshots.
Microsoft deprecated their Slack connector for Teams in 2024. There is no built-in way to connect Slack channels to Teams channels. Power Automate introduces delays. Zapier polls instead of streaming.
Most integration tools assume you control both platforms. In reality, your Slack workspace and your client's Teams tenant are in different organizations with separate IT departments and security policies.
SlackBridge connects to Slack via OAuth and to Microsoft Teams via the Microsoft Graph API. When someone sends a message in a mapped Slack channel, SlackBridge receives it instantly via webhook, then posts it to the corresponding Teams channel. Replies from Teams flow back to Slack the same way. Messages appear in seconds, not minutes.
Each side sees messages from the other platform as bot posts with the sender's name. Users stay on their preferred tool and communicate as if everyone were in the same channel.
Sign in with Slack OAuth. 30 seconds, no IT approval needed.
Send an invite link. Your contact or their IT admin authorizes the Teams connection.
Pick which Slack channel connects to which Teams channel.
Real-time two-way messaging. Both sides stay on their tool.
| Feature | SlackBridge | Power Automate | Slack Connect | Zapier |
|---|---|---|---|---|
| Slack to Teams messaging | Yes | Delayed | No (Slack only) | Delayed |
| Real-time delivery | Seconds | 3-15 min | Seconds | 5-15 min |
| Two-way messaging | Yes | Complex setup | Yes | Complex setup |
| Cross-org support | Yes | Same tenant | Both need Slack | Same tenant |
| No-code setup | 5 minutes | Build flows | Simple | Build zaps |
| Multi-tenant | Unlimited clients | No | No | No |
| Free tier | 1 connection | Limited | Paid plan | Limited |
Your creative or marketing agency stays on Slack. Your Fortune 500 clients stay on Teams. Project updates, feedback, and approvals flow between both in real-time.
Connect your single Slack workspace to each client's Teams tenant. One inbox, many client relationships, zero context switching.
MSPs supporting multiple organizations. Bridge support channels into each customer's Teams environment without managing multiple chat apps.
Migrating from Slack to Teams? Bridge channels during the transition so departments can communicate regardless of which tool they are on.
SlackBridge uses OAuth 2.0 to securely connect to both Slack and Microsoft Teams via their official APIs. When a message is sent in a mapped Slack channel, SlackBridge receives it via webhook and posts it to the corresponding Teams channel using the Microsoft Graph API in real-time. Replies from Teams are delivered back to Slack the same way. No polling, no delays, no middleware to manage.
Power Automate uses polling to check for new messages, which introduces 3-15 minute delays. SlackBridge uses real-time webhooks so messages appear in seconds. Power Automate requires building and maintaining custom flows, while SlackBridge works out of the box with a 5-minute setup. Power Automate is better suited for workflow automation, not real-time chat bridging.
Slack Connect requires both parties to use Slack. SlackBridge works when one side uses Slack and the other uses Microsoft Teams. This is the common scenario for agencies and consultants whose enterprise clients are standardized on Microsoft 365 and will not adopt Slack.
Yes. SlackBridge is designed for multi-tenant scenarios. Agencies and consultancies can connect their single Slack workspace to multiple client Microsoft Teams tenants. Each connection is managed independently with its own channel mappings and permissions.
SlackBridge uses OAuth 2.0 for authentication and the official Microsoft Graph API for Teams integration. Messages relay in real-time and full message content is not stored permanently. Temporary metadata is retained for up to 7 days to support thread synchronization. All connections use TLS encryption.
Microsoft deprecated their native Slack connector for Teams in 2024. SlackBridge provides a purpose-built replacement with two-way messaging, real-time delivery, and multi-tenant support that the deprecated connector never offered.
Free plan includes 1 connection and 1 channel bridge. No credit card required.
Get Started Free