Create a different Yahoo ID or email address
While you can't change your Yahoo ID or primary email address, you have the option to create an extra email address – a second Yahoo email address available with your existing Yahoo ID account. If this doesn't work for you, you can always start over and create a brand new Yahoo account.
However, you can change your primary Yahoo email address for Yahoo Groups:
First, make sure that you’re signed in to the Yahoo ID in question.
- On the group's main page, click Membership | Edit Membership.
- Next to "Identity," click the Edit Settings icon .
- Select your desired email address.
- Click Save.
Any email addresses linked to your Yahoo ID must be verified to be used with Yahoo Groups.