I just progressively went through all my accounts in my password manager, and changed the email. I used my Gmail account to register to everything for more than

I just progressively went through all my accounts in my password manager, and changed the email. I used my Gmail account to register to everything for more than a decade, but since I also kept a complete list of all my accounts, it wasn't an issue to change it one by one. I still have my Gmail account, it just sits empty (in case). There's no need to delete it.