Why is a cover sheet added to my mailing via EasyPost Connect?

Q: Why is a cover sheet added to my mailing via EasyPost Connect?

If the address details on the document do not correspond with EasyPost's envelope window, we must add a cover sheet.

A cover sheet is added because the address details on the document does not correspond with EasyPost's envelope windows. By adding a cover sheet , we can position the address details at the correct height and the mail can then be processed correctly. A cover sheet is also added if it is not possible to place a bar code above the address details on the document.