You mean you had the key? If only password of the email then could means its not sure if you can get it. Provided it has email means you used some centralized wallet to store your bitcoin.
But if you used non cusotidial wallet then you can access it on some supported wallets. Can I know what wallet have you used to store your bitcoin?
For sure this is a custodial wallet since it do talk about email and password and this would really be a long list if we do tend to mention all of those centralized platforms out there.
Its just really impossible to believe on that only a year passed he hadnt able to label it on where he did create this wallet. Its really hard to guess since email and password
could be inputted out in lots of platforms out there.