diff --git a/etc/example.conf b/etc/example.conf
index 47386d98..1699e3c8 100644
--- a/etc/example.conf
+++ b/etc/example.conf
@@ -95,6 +95,11 @@ extra_to_field=X-Envelope-To:
 ; to messages without message-id.
 archive_emails_not_having_message_id=0
 
+; whether to archive each and every single email received (0) or
+; only those on the mydomains list (1). The default is to archive
+; everything
+archive_only_mydomains=0
+
 ; minimum word length in mail body to index
 min_word_len=1