They’ll receive an email notification alerting them that you’ve added them to a folder
If the person you’ve added already uses Granola, the folder will appear directly in their sidebar. If they don’t use Granola yet, they can view the folder on the web, and be prompted to sign up for Granola to open it in their app.
If you’ve got your Slack integration set up with Granola, you can set up a rule for any notes added to a folder to be automatically posted to a Slack channel of your choice.You can set up this rule by clicking on the 3 dots next to a folder name in the sidebar, then ‘Integrations’.
GIF of sidebar > integrations
Choose a channel, and any new notes that you add to the folder will be posted to Slack. If you can’t see any channels to select, make sure you’ve set up your Slack integration beforehand.