Do I understand it correctly that an incomming webhook can only devliver messages to private messages the creator of the webhook is part of? So it cannot post to any private message scenario as another user?
Can it post to a private channel, the creator is not part of?
To clarify, I'm using a slash command (so everyone can trigger it everywhere) and then try to get the response back via an incomming web hook (because slash commands dont support attachments).