The feature is not available for POP3 and IMAP accounts. The Quick Actions feature is only available for Exchange accounts (Microsoft 365 Exchange Online, and Exchange on-premises). Why do I only see the Dismiss action on the New Mail Notification toast?
This setting is per Exchange account, so when you have multiple Exchange accounts configured in Outlook, you can have different Quick Actions selected for each. Outlook 2019 (Volume License) and Outlook 2016 (MSI) do not have the Quick Actions feature.
OUTLOOK 2016 ARCHIVE BUTTON WINDOWS 10
Note: This feature requires you to use Outlook for Microsoft 365 Apps, Outlook 2019 (Retail), or Outlook 2016 (Retail) Version 2006 or newer on Windows 10 or Windows 11. Now the Flag action is shown first and the second action allows you to move the email directly from the New Mail Notification. In the Outlook Options dialog box in Outlook 20, please click Advanced in the left bar, then click the AutoArchive Settings button in the AutoArchive. In both places I stated that you could change the target folder that the Archive button points to. I also wrote about it in the 5th Edition of my Outlook book. In Outlook 2007, please click Tools > Options. In my Jnewsletter I discussed using the Archive folder and button that Microsoft added to some releases of Outlook 2016.