how to remove old email. I can only manage it and not remove it.

If the old email is still tied to the Windows sign-in or app sign-in on the laptop, use these Windows steps first:

1. Open Settings > Accounts > Your info.
2. If available, select Stop signing into Microsoft apps automatically.
3. Then select Sign in with a local account instead and complete the switch.
4. Restart the PC.
5. Go back to Settings > Accounts > Your info.
6. Select Sign in with Microsoft account instead and sign in with the new email account.
7. Restart the PC again.

If the old account still appears on the device, remove its work/school connection:

1. Open Settings > Accounts > Access work or school.
2. Select the old account if it appears there.
3. Select Disconnect.

If the old account is only inside Outlook, remove it there:

Classic Outlook

1. Open Outlook.
2. Select File > Account Settings > Account Settings.
3. Select the old account.
4. Select Remove.
5. Confirm Yes.

New Outlook

1. Select View > View settings, or File > Account info > Accounts > Your accounts.
2. In Email accounts, find the old account and select Manage.
3. Under Account details, select Remove.

If Outlook only allows Manage and not Remove, create a new Outlook profile with only the new account, then remove the old profile:

1. In Outlook, select File > Account Settings > Manage Profiles.
2. Select Show Profiles.
3. Add or use a profile that contains only the new account.
4. Set it as the profile to use.
5. Select the old profile and choose Remove.

Deleting an Outlook profile removes the email accounts stored in that profile. Any associated .pst files remain on the computer, but offline cached data in the profile is removed.

• Removal of previous Microsoft account information - Microsoft Q&A
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• Remove or delete an email account from classic Outlook for Windows
• Add an email account to Outlook for Windows
• Remove a profile