Hello All

I am totally new to this forum and to Windows 10.
The set up of Windows 10 was fairly intuitive for me.
I have some training and a lot of experience with previous versions.
Here is the problem I have encountered.

Using the MAIL app I set up a couple email addresses.
One was a Hotmail account and the other a POP- SERVER

In error I entered the wrong data during set up, combining the two.
After fighting with it a while I deleted all accounts to start over.
Now the account I set up in error is stuck in the app and when attempting to delete it, does not appear in the window for accounts available to be deleted.
It is not a legit account and appears every time when launching MAIL.

Any consideration is appreciated.