First, open the message. Click on it in your Inbox (or other folder).

Photos

Any photos attached to an email appear as links above the message text (smilingfrog.jpg, for example) as well as thumbnail images beneath the message. Click the link OR the thumbnail image OR the title of the image below the thumbnail to download the photo. After scanning it for viruses, Yahoo! Mail either begins downloading the photo automatically (depending on your browser settings), or displays a Download File link. Click it!

Other types of files

Click the name of the attached file above the message text. After scanning it for viruses, Yahoo! Mail either begins downloading the file automatically (depending on your browser settings), or displays a Download File link. Click it!