Question

Could you please check this sentence I need to include in a letter?

1) Thank you very much for your last e-mail.
Unfortunately, I couldn't read the document attached to it.
2) Actually, it was blank. Can you post (send) it to me again (once more, another time).

Answer 1

Thank you very much for your last e-mail. Unfortunately, though, when I opened the attachment, it was blank. Please check the attachment and re-send it to me.