diff --git a/offlineimap.conf b/offlineimap.conf
index d7c729a..8558c3c 100644
--- a/offlineimap.conf
+++ b/offlineimap.conf
@@ -1243,8 +1243,11 @@ remoteuser = username
 #
 #  http://mail.google.com/support/bin/answer.py?answer=78799&topic=12814
 #
-# To enable GMail labels synchronisation, set the option "synclabels"
-# in the corresponding "Account" section.
+# To enable GMail labels synchronisation, set the option "synclabels" in the
+# corresponding "Account" section.
+#
+# Side note: Gmail will keep the deleted emails in "Gmail\All Mail" unless you
+# defined it differently in your online settings.
 #
 type = Gmail