Your Primary email is the email address you used when you signed up for your Fleep account. Alternate emails work as an extra layer of search when someone wishes to include you in a Fleep conversation but doesn’t know which account you initially signed up with. In its essence it’s an extra identifier to your Fleep account that shows it’s you behind this email address. Instead of needing to create a bunch of different Fleep accounts you can unify all of them into one account.
That way, when your colleagues add you to a conversation with a company email address and your friends add you into a quick chat with your personal email address Fleep will know, that it’s still you and connect the dots.