--- /home/xiong/Desktop/xdg/original/xdg-email
+++ /home/xiong/Desktop/xdg/patched/xdg-email
@@ -378,6 +378,7 @@
     elif [ x"$KDE_FULL_SESSION" = x"true" ]; then DE=kde;
     elif [ x"$GNOME_DESKTOP_SESSION_ID" != x"" ]; then DE=gnome;
     elif `dbus-send --print-reply --dest=org.freedesktop.DBus /org/freedesktop/DBus org.freedesktop.DBus.GetNameOwner string:org.gnome.SessionManager > /dev/null 2>&1` ; then DE=gnome;
+    elif [ x"$MATE_DESKTOP_SESSION_ID" != x"" ]; then DE=gnome;
     elif xprop -root _DT_SAVE_MODE 2> /dev/null | grep ' = \"xfce4\"$' >/dev/null 2>&1; then DE=xfce;
     elif [ x"$DESKTOP_SESSION" = x"LXDE" ]; then DE=lxde;
     elif [ x"$XDG_CURRENT_DESKTOP" = x"LXDE" ]; then DE=lxde;