You can move your contacts off the AT&T (att.net) account by exporting them from Outlook 2021 and importing them into your Google (Gmail) contacts, so they stay with Gmail even after you remove the AT&T account. See: Transfer contacts between Outlook and Google Gmail - Microsoft Support
To make it clear, do you want the contacts to live in your Gmail account (Google Contacts), or do you only need them to remain available inside Outlook after you remove the AT&T account?
Meanwhile, please try these steps:
- Export contacts from Outlook 2021 (ATT contacts) to CSV
- In Outlook, go to File > Open & Export > Import/Export > Export to a file > Comma Separated Values (.csv) > select the Contacts folder under your AT&T account > choose a save location > Finish. See: Import or export contacts in Outlook using a .csv file - Microsoft Support
- Import that CSV into Google Contacts (so they belong to Gmail)
- Sign in to Google Contacts, choose Export/Import flow and import the CSV you just created (this is the supported way to use Outlook contacts in Gmail).
- Optional safety backup before deleting AT&T
- If you want an extra backup, export Outlook data to a PST file (contacts can be included) before removing the account.
Please tell me how it goes. If the problem persists, please don’t hesitate to reply to this thread and I will be happy to help. Have a lovely day!
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