morg Slack Bridge

Matrix.org provides a public free Slack bridge, which is free to use forever but comes with some limitations:

You can bridge to an unlimited number of channels, but only public channels. You must bridge to a public room. Matrix users cannot puppet themselves, or Direct Message other users.

This guide explains how to use the free Slack bridge from the Matrix.org Integration Manager to integrate your Matrix room with a Slack room.

Note that EMS offers a paid Slack bridge with more features.

It requires your homeserver to be able to federate with Matrix.org.

An EMS server is not required.

Setup

Create a new room in Matrix, with encryption off

Click Room Info in the top right corner of the room

Click Add widgets, bridges & bots

Choose Slack from the list of available bridges and integrations

Click Add Bridge
NOTE if you have purchased your Slack bridge from EMS: Ensure it says Slack integration on <your ems domain> here.

Click Add to Slack

Enter your Slack workspace URL, and click Continue

Enter your Slack email address and password, then click Sign in

Click Allow

Close the Slack tab and return to Element

Click List channels

Click the Slack channel you want to bridge to the Matrix room

Slack is now added to the Matrix room

Go to the channel you selected on Slack, and add the Element App via the Integrations tab in the members sidebar

The Matrix room and Slack channel are now bridged