Definitions for "Attached file"
A file that is embedded into an email message.
An attachment, or attached file, is a file sent over the Internet along with an email message. Attachments are the quickest way to share documents with people outside your organization. The advantage of sending an attachment over sending a fax is that the receiver can view, edit or print the attachement as s/he wishes. When sending an attachment to someone, make sure you send it in a format that they can read. For instance, if you send a Word for Macintosh document to someone who has WordPerfect on a PC, they may not be able to open the file, or it may be garbled. Source: TechSoup.org
A document that accompanies an e-mail message.