@MojangSupport How am I suppose to migrate my account to Microsoft when I can't remember one of my security questions I remembered two of them but can't remember the third and the email provider I created the account on doesn't exist anymore so I can't recover.

Hey there, we may be able to help you recover your account. Please complete our request form at msft.it/6016wHAku so we can quickly and safely assist with your question! ^NQ

In the section for the email should I write my new email provider or the old one cause the old one doesn't exist and it says in your form you will contact through that email, what should I do at that step?