Subscriber agnostic notification

Hello, I have this simple workflow, where I need to 1. send an email to the subscriber (this is easy, I just send the preconfigured subscriberId and it works) 2. send a slack message to a public channel (not sure how to do this) The slack configuration is not related to the subscriber, and it feels wrong to add the slack webhookUrl to this subscriber using "setCredentials". Is there any way to make the slack channel read the configuration from another place, rather than at the subscriber level?