Yes, you can transfer your contents on Listen through the assistance of the alert rules to Slack or other services. By this way, you can receive the Slack notifications except for emails for the contents which are compatible with your registered Alert rules or you can directly add such content via webhook API to your services.

You need to work on your systems and prepare an API endpoint.

After following this step and creating url which will be added to the system, you can see what to do next through these articles:

• How can I do Slack Webhook integration?
• How can I do Listen Webhook integration?