Separate a Google Workspace account into two accounts
Remove the secondary domain, example.com, from the user's alternate address (email alias).
- Go to Menu. Directory > Users.
- In the Users list, click a user's name.
- Click Add Alternate Emails.
- If the email address uses the secondary domain, click Remove .
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Separate a Google Workspace account into two accounts
Remove a domain from your managed Google ...
Verify your domain to unlock features (for Gmail accounts)
Can't add new domain to Google account
Add or delete an alternate email address (email alias)
2:00What's an email alias and how do I create one in Google Workspace?