Slack is a team communication product that can be integrated with almost anything.
To enable reports, while logged in to Usetrace:
Go to Settings > Scheduling & Reporting
From Automatic reports click Add report and select Slack
Fill in the following configuration:
Always - always receive reports not depending on the results*
When results change - receive reports only when a trace is broken or fixed
Fails only - receive reports only when there are failure
*Setting reporting to Always and scheduling test runs every 10 minutes might lead to an annoying amount of reports. Use this option carefully.
Sending test reports to Slack requires an apitoken for the wanted channel.
Also specify the Slack channel where you want to receive the test reports, e.g. #general.