This should briefly summarize your bug report. If you don't give a value, this field is set to All . If you don't give a value, this field is set to All . He owns the bug by default. Note that the default owner can only be found if product, version and component are valid.
Most keys take arbitrary strings, however some keywords require specific values.
If you're not sure what values are valid for a given key, send your mail with that key empty, and you will get a reply detailing all valid values. E.g. if you specify a product which has exactly one component, this component will be found by the interface automatically. After you have specified the required keywords, you will need to describe your bug. You don't need a keyword to start your bug description, all text following the keyword block will be included in the long description of the bug. The mail interface is able to handle MIME attachments.