here I send you my certificate / please find attached my certificate , how would you put it?
I am never clear about waht to say when I am sending a file to someone. it should be semi formal language.
my best attempt is

Please, find enclosed the required certificate, does it sound to formal?

thank you

Question

here I send you my certificate / please find attached my certificate  , how would you put it?
I am never clear about waht to say when I am sending a file to someone. it should be semi formal language.
my best attempt is

Please, find enclosed the required certificate,   does it sound to formal?

thank you

Answer

Enclosed is for a letter or package; not really for emails.

Other than that, I like please find attached. it is accurate and not really too informal/formal.

Answer

Hi Emarbe, the choice that suits well in that context is to use the verb attach when you are sending a file via e-mail. Greetings from Argentina.

Answer

'Enclosed' would be if you were sending it as a letter. The document would be 'enclosed' in the envelope. It doesn't work for things you're sending by email. As you seem to already know, the verb to use is 'attach.'

Please find my certificate attached.
Please find my certificate in the attachment.

Or simply: My certificate is attached.

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