There are two types of email Notifications, and the Type called
"Open" can go to any email address.
But both Reminders and Subscriptions can only go to Users in an application.
If you do need to somehow sort of trick the system into sending emails to non-users then one way to do that is to make a pipeline which will scan the records for emails that need to be sent an update some trigger field like the current date time in order to trickles the Open email notification.
But if you are very new to QuickBase, setting up that pipeline will be a little bit of a learning curve.
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Mark Shnier (Your Quickbase Coach)
mark.shnier@gmail.com
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