Using Classic Outlook on Windows for personal email, calendar, and contact management
Hello, I’m Virginia a fellow Windows user.
Signing in with your Gmail only affects logging into your virginmedia account online, to set up the email account you’d still use your ntlworld/virginmedia email address - I’ve just added mine to outlook app.
You’ll also require an app specific password which is used instead of the account password.
My old ntlworld account uses an outlook username to sign in via virginmedia.com but setting up my email still uses my ntl email address.