Gnus is quite fast when scoring the "traditional"
headers---`From', `Subject' and so on. However, scoring
other headers requires writing a head
scoring rule, which means
that Gnus has to request every single article from the back end to find
matches. This takes a long time in big groups.
Now, there's not much you can do about this for news groups, but for
mail groups, you have greater control. In the see section 3.1.2 To From Newsgroups section of the manual, it's explained in greater detail what
this mechanism does, but here's a cookbook example for nnml
on
how to allow scoring on the `To' and `Cc' headers.
Put the following in your `.gnus.el' file.
(setq gnus-extra-headers '(To Cc Newsgroups Keywords) nnmail-extra-headers gnus-extra-headers)
Restart Gnus and rebuild your nnml
overview files with the
M-x nnml-generate-nov-databases command. This will take a long
time if you have much mail.
Now you can score on `To' and `Cc' as "extra headers" like so: I e s p To RET <your name> RET.
See? Simple.
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