Hi lulupit,
Thanks for coming back to me via private message.
As you're an existing customer, any email address can be managed by logging in to My VM. Just head to My Profile then Manage my accounts.
From here you can delete any secondary email addresses.
If the email address is a primary address then this won't be able to be deleted I'm afraid.
Please let us know how things go and if you need any further support, you know where we are 🙂
Thanks,