I like to file some types of mails under multiple labels (normally one for an overall category, and one that's far more specific).
As far as I can see to do this automatically with GMail's filters you need to create two (or more) filters with the same rule, each one adding a different label.
Eg
Matches: to:(football@mydomain.com)
Do this: Apply label "Sport"
Matches: to:(football@mydomain.com)
Do this: Apply label "Football"
Is there any way to combine those filters into one?
