It is normal if you have only one email account. But if you add a few emails and you want to view all emails from all accounts, in your inbox you can’t say which email is for which email account.
If you see Apple Mail in every email section you will find a label mentioning the email account. So if that feature is available, that would be great.
For now, I’ve to manually select a single account & then view the emails.
Expected to label which email account this email belongs to: