moved the documentation of the config

to the actual docs.

docs/usage_overview.rst

@@ -82,6 +82,7 @@ files from the scanner.  Typically, you're looking at an FTP server like
 
 .. TODO: hyperref to configuration of the location of this magic folder.
 
+.. _usage-email:
 
 IMAP (Email)
 ============
@@ -133,6 +134,11 @@ These are as follows:
     paperless will read them automatically. The default acion "mark as read" is
     pretty tame and will not cause any damage or data loss whatsoever.
 
+    You can also setup a special folder in your mail account for paperless and use
+    your favorite mail client to move to be consumed mails into that folder
+    automatically or manually and tell paperless to move them to yet another folder
+    after consumption. It's up to you.
+
 .. note::
 
     Paperless will process the rules in the order defined in the admin page.