Add or remove an address book - Microsoft Support
You can use the Outlook Address Book—a collection of address books or address lists created from your contact folders—to look up and select names, email addresses, and distribution lists when you address email messages.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Outlook 2013
Add or remove an address book - Microsoft Support
You can use the Outlook Address Book—a collection of address books or address lists created from your contact folders—to look up and select names, email addresses, and distribution lists when you address email messages.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Outlook 2013