I have all the domain name records and thankfully I still know the login details for the actual domain control panel on NameCheap. (So I can prove that its me)
The reason this is such an issue for me is that even if I was to be sent a password reset there is no way I could find the related email. I have 4 standard ones and all of them seem to not be the correct one so I must have used a specific one for this purpose
I have proof of it being my account since the domain is pointed to the ns server and I can prove that I actually own the related domain that the account actually uses. I could even provide the password as I know what it would be, I just don’t know the email.