Currently I can setup a Slack notification to myself when an update is completed in Smartsheet but it would be nice to setup a Slack notification to a specific channel. For example, I'd like to setup notifications to our team channel when someone requests access to a Smartsheet.
Are you receiving the notification via email? You can set up a filter (in Outlook or Gmail) to forward the email to slack. In slack you can set up an email address for a channel:
Not the cleanest but it works.
/marc