Your Primary Email address is typically tied to your program eligibility and is provided by your organization. While you can not change your account's primary email address, you have the option to add a secondary Preferred Email address to your User Profile. 

A preferred email address will allow you to receive all notifications associated with your organization’s wellness program and log into your account with an address other than the primary email. 

For steps on how to add a preferred email, please take a look at the article How do I add a preferred email?