This can be possible for you to change your virtual email to any other email address you want, but i want to advise a strong warning to us, that we must be able to remain vigilant in other not to create a compromise form the email address we have been using before on the same binance main account we had with them, because sometimes this can be used to track on multi accounting on them, and i don't really know if their policies allows for that, though the virtual email here is entirely different, but should not create a linkage.