Building and customizing solutions using Microsoft 365 Copilot APIs and tools
Add the Microsoft account or work/school account that owns your Copilot entitlement to new Outlook; having only the BellSouth IMAP mailbox connected does not make that Copilot identity available to Outlook.
Add the Copilot-enabled account
- In new Outlook, select your account profile in the app header.
- Select Add an account.
- Sign in with the same Microsoft, work, or school account through which Copilot works in Word.
- Leave the BellSouth IMAP account connected.
- Restart new Outlook, compose a message from BellSouth, and retry Draft with Copilot.
New Outlook can share Copilot access from an eligible signed-in account with connected third-party email accounts. This applies to:
- A Microsoft account with an eligible Microsoft 365 Personal, Family, Premium, or Pro subscription.
- A work or school account with a Copilot license.
The licensed account must be logged into Outlook on the same device as the third-party mailbox.^1^ Microsoft also documents adding another account from the profile menu.[^2^](https://support.microsoft.com/accounts-billing/subscriptions/[Subscription ID] "Use Microsoft 365 Personal, Family, or Premium at work")
If the subscription uses the BellSouth address
If your Microsoft 365 Personal, Family, or Premium subscription is registered to a Microsoft account whose sign-in identity is the same BellSouth address, use new Outlook’s account-linking option:
- Open View > View settings, or File > Account info.
- Select Accounts > Your accounts.
- Select the BellSouth account and choose Manage.
- Select Add Account and authenticate the Microsoft account carrying the subscription.
The Add Account linking option appears only when Microsoft detects a qualifying subscription with the same email identity.^3^
If it remains unavailable
- Open Settings > Copilot > Copilot control and ensure Turn on Copilot is enabled.^4^
- Check that Connected Experiences has not been disabled in Outlook privacy settings. Disabling it makes an account ineligible for Copilot sharing.^1^
- If using Microsoft 365 Family, Copilot belongs to the subscription owner; other family members do not inherit it through subscription sharing.^1^
- For an organizational license, ask the Microsoft 365 administrator to confirm that the exact work/school account added to Outlook has the Copilot license. Mailbox-grounded organizational experiences ordinarily require an Exchange Online mailbox.^5^
Reinstalling or repairing Outlook is unlikely to address this specific configuration until the Copilot-enabled identity is present in Outlook alongside the IMAP account.
References
- Sharing Copilot in Outlook | Microsoft Support
- [Use Microsoft 365 Personal, Family, or Premium at work | Microsoft Support](https://support.microsoft.com/accounts-billing/subscriptions/[Subscription ID])
- Link non-Microsoft email accounts to your existing Microsoft subscription | Microsoft Support
- What's new in new Outlook for Windows | Microsoft Support
- Microsoft Copilot requirements