Note: If your company or organization uses a company portal site to navigate to the discount center you need to first update your profile on that site.
Once logged in to your account click on the username icon on the top right-hand corner of the page.
Select Change Email Address:
Your current email address displays.
Enter your new email address. Click 
.
Once logged in to your account, click on the username icon on the top right-hand corner of the page.