Hi ibbotson,
Thanks for taking the time to contact us via the Community. It's lovely having you on board with us in the Forums. ⭐
We're sorry to hear you've forgotten your original password. When adding your email to a new device app or client, you will need to generate an app password.
Please log in to My Virgin Media here > Click on Account settings > Virgin Media Mail settings > scroll down to the App password section and click the Generate new App password button.
You should get a pop up message asking you to verify your email address and if you've not already updated your account, you'll need to use a 3rd party email address to continue. You'll be sent a one time passcode to enter on the next page to verify it's you. Once verified you'll then be given an app password which will look something similar to: mail-horse-yellow-panda and you should note this down.
To get things working on the new app or client, please ensure you use your VM email address as the username and the newly generated app password. If you have the mail on other devices, you will need to enter the new mail password in the settings too.
Let us know if you have any further queries or questions 😊
Thanks,