Getting Google Groups mail at my personal Google Account
If you're suddenly getting mail from Google Groups to the primary email address listed on your personal Google Account, it's because you cannot use your @mydomain.com address as an alternate email address.
If your work, school, or other group signs up your @mydomain.com domain for G Suite, and you previously had the @mydomain.com address listed as an alternate address on your personal Google Account, Google removes the address as an alternate email address on any Google Accounts you've set up. If you've set any groups to send email to your alternate email address, Google now delivers emails from Google Groups to the primary email address on your Google Account.
To change your email settings:
- Sign in to Google Groups.
- In the top left, click "My Groups."
- Next to the group you want to change email settings for, click Edit.