Change Mail Adress

One year ago I used Anki quiet often and now I wanted to continue my experience.
The problem is that my old mail-adress does not exist anymore and in order to sync my computer with my phone-version again, I need to confirm my account via mail…
Is there any option to change my adress without confirming it via mail?
And if not: Do I really have to delete all my existing cards on my old account and create a new one, if I want to continue using it with syncing my computer and phone?

Thanks for your response,

You can change your e-mail address at without access to the current one.
I’m not sure why you would need to confirm it first, but even if that’s a problem and you need to switch accounts, you can simply export your collection from the current one and import it into a new one.