Enclosures. If you have enclosed any documents along with the letter, such as a resume, you indicate this simply by typing Enclosures below the closing. As an option, you may list the name of each document you are including in the envelope.
An enclosure is something that closes you in, like a pen or a cage. When a cobra disappeared from an enclosure at the Bronx Zoo, the entire Reptile House had to be shut down until the snake was found. An enclosure can also be something that's included in an envelope with a cover letter of some sort.
On a paper business letter, you often include the CC line underneath your signature, either above or below any enclosures line.
Under your name at the end of the letter, skip two lines. On the third line, write "Enclosure:" or "Enclosures:" if there are multiple documents. Skip a line after "Enclosures:" and then begin your list of enclosures. Put each enclosed document title on its own line.