Why can't I add to the list of email spam filters?

[WallyBall2003]

I know the filters.txt file is only for information purposes. But is there
some other file that can be edited to add more filters? If not, any idea why
Microsoft wouldn't include that ability?

 

[Brian Tillman]

I know the filters.txt file is only for information purposes. But is
there some other file that can be edited to add more filters?
Nope.

If not, any idea why Microsoft wouldn't include that ability?

Rules generally fill that niche.