Windows 10 upgrade – now unable to set up live mail accounts

Upgraded to Windows 10.

Was using Windows live mail.

When clicked on mail for first time it came up

with email names and prompted for passwords.

All accounts were set up - but no mail able to be sent or received.

The first account set up is now linked to Outlook and I cannot get rid of it.

Thought mail was supposed to be picked up automatically on upgrade?