Info: If you're looking to add another email address/alias to your account, refer to this help article.

Once you have added another email address to your account

1. Go to accounts.zoho.com (or) open the profile panel from your app, then click My Account.
2. Click Profile, then click Email Address.
   
3. Click Set as Primary address to the right of the desired email address.
   
4. Click Make Primary to confirm.