more obvious example
example.odt (application/vnd.oasis.opendocument.text), 11.13 KB, created by Caolán McNamara on 2015-01-15 17:28:13 UTC
(hide)
 
Creator: Caolán McNamara
Created: 2015-01-15 17:28:13 UTC
Size: 11.13 KB

Attachment is not viewable in your browser because its MIME type (application/vnd.oasis.opendocument.text) is not one that your browser is able to display.

Download the attachment.

Actions: View
Attachments on bug 85666: 112311