How do I modify my email on Hyperwallet?

To modify the email address associated with your Hyperwallet account, log in and go to "Settings > Preferences" then "Notifications". Enter the new email address, your current password, and click "Confirm". 

If this regards PayPal and the fact that your email address must be identical to the one used for your PayPal account, you can add a secondary email address directly to your PayPal account. By doing so, you will avoid having to change the email address for your Hyperwallet account (How do I update or delete my email address on my PayPal account?)