How to set mail alerts to show delete button vs archive button

Comparing 4 computers with:
Windows 10 build 1703 x64
All have the latest updates from Windows Update
All have the same version of the Mail client from Windows Store
All have Office 2016 without Outlook

1 computer shows the delete button in the email alert notification popup
3 computers shows the archive button

Does anyone know what registry tweak or file(s) to replace in order to restore the delete button?

I've read numerous posts that Microsoft removed the delete button but they reference Outlook

Not sure why I have 1 machine showing the delete button though it was a clean install of Win10 RTM then it was upgraded to 1511 > 1607 > 1703.

The other 2 were clean installs of 1607 then upgraded to 1703

1 is a clean install of 1703

Thanks!!

Even more confusing.

Using the computer that shows Delete button.
I added a new email account today & the mail alert popup shows an Archive button.
All the previous email accounts setup prior to today still shows the Delete button.

Settings from the Mail client account as well as the email accounts are identical.

Weird!!