Slack to Teams Bridge & Integration
A Slack to Teams bridge routes messages bidirectionally between a Slack channel and a Microsoft Teams channel in real time — so each side stays in the tool they already use. TetherChat also bridges Discord and supports Teams-to-Slack in the reverse direction.
What is a Slack to Teams bridge?
A Slack to Teams bridge (also called a Slack Microsoft Teams integration) connects one Slack channel to one Microsoft Teams channel. Messages sent in Slack appear in Teams with the sender's name and avatar — and replies in Teams flow back to Slack the same way. The same connection works as a Teams to Slack bridge in reverse; you choose which side creates the Tether ID first.
This is different from Slack Connect or Teams external access, which only help when both organizations use the same platform. A channel bridge is for when one side is on Slack and the other is on Teams — or when you also need Discord to Slack or Discord to Teams sync in the same tool.
How TetherChat's Slack to Teams integration works
- Install TetherChat in your Slack workspace and Microsoft Teams (both organizations install independently for cross-company bridges).
- Create a Tether in Slack — run
/tetherin the channel and choose Create New Tether. Copy the Tether ID. - Connect from Teams — add TetherChat as a channel tab and paste the Tether ID in the configuration form.
- Messages sync both ways with sender attribution, threads, edits, deletes, reactions, and file attachments.
Setup often takes about 5–10 minutes per workspace (admin approval may add time).
What syncs across the bridge
| Capability | Slack ↔ Teams |
|---|---|
| Bidirectional text messages | Yes |
| Sender name & avatar | Yes |
| Threads & replies | Yes |
| Edits, deletes, reactions | Yes |
| File & image attachments | Yes |
| Teams private channels | Not supported |
| Message content stored by TetherChat | No |
Slack to Teams integration vs other options
- Mio alternative — evaluating replacements after Mio? See our Mio alternative guide.
- Webhooks & DIY bots — one-way or shared bot identity. Compare on the integration comparison page.
- Slack Connect / Teams external access — only when both sides share one platform. See TetherChat vs Slack Connect.
- Step-by-step tutorial — How to connect Slack to Microsoft Teams.
Start your Slack to Teams bridge
Free beta. Unlimited channel connections. Message content is not stored.