More than one ntlworld email address
Many years ago I had 2 broadband accounts for 2 houses. The accounts were not created at the same time.
My 'primary' ntlworld email address was associated with one of them and I had to create a second ntlworld address to manage the second account (don't remember why I couldn't manage both using the same email address).
Several years ago, the account linked to my primary email address was closed but I was (and still am) able to access the email via the web interface.
I have now created a gmail account but I am unable to import all the emails from my primary account, I am getting authentication errors.
I have seen some messages that say that I need to generate an 'app password' so that gmail can connect and import all the emails/folders.
What do I need to do to enable this?