Please find attached the detail for my application.
Is this sentence correct if I supply the detail in the email body, not in a separately attached file?
English Language & Usage Stack Exchange is a question and answer site for linguists, etymologists, and serious English language enthusiasts. It only takes a minute to sign up.Sign up to join this community
As you have it written is correct, though you would use "the details".
Attached is functioning as a participial adjunct, not a verb, and so it has variable placement. Compare:
Attached please find the documents you have requested / Lying on the table you will find the documents...
Please find attached the documents... / You will find lying on the table the documents...
Please find the documents you have requested attached / You will find the documents you have requested lying on the table