Emanuel Berg <embe8573@student.uu.se> writes:

> asjo@koldfront.dk (Adam Sjøgren) writes:
>
>> By splitting, as you would do with any other email
>> you do not want in your mail.misc group.
>>
>>>> X-Spam-Flag: YES
>>
>> Maybe on this header?
>
> You mean like this?
>
> (setq nnmail-split-methods
>       '(("spam" "^X-Spam-Flag: YES")
>         ("mail.misc" "") ))
>
> I hope I won't get them in a directory called "spam",
> now!

Can't you have it unsubscribed?

Certainly, you can solve this problem another way. What do you think
about scoring?

And of course this is not a good practice to use gnus for sorting your
mail. It is very slow and local-only.