Extending searching into the archives folder in Mail.app When I'm doing a search into my mailbox, Mail is not looking into the archives folder, and that is pretty annoying.

I checked "Look into every folder" into the preferences, but it doesn't change anything. If I want to look into the Archives folder, I have to click on it, and then I can type my search criteria.

Isn't it possible to search into this folder as well when I'm on my main folder?
Here is a solution fro this post that might help:
Alex

It appears that this is linked to Spotlight in some way.
I recently turned spotlight indexing back on for the volume holding my $HOME and immediately this started working again.
I assume that without the spotlight index it can't find the Archive directly automatically, then finds it via IMAP when I run through the steps in the question.