Lost email attachments

Daniel Fisher

New Email
I have a Acer Chromebook. I created a document/ bill in docs. I attached the document to an email and sent it ot my customer. Customer cannot find the email. I looked back at my sent emails and found the email. The attachment is not with the email. I also CC'd myself the email. It does not have the attachment either. How can I recover or find the attachment. Thanks for any help given. I know nothing about Chromebooks or computers.