--- /dev/null
+#!/usr/bin/perl -p -i
+
+# copyright (c) Benjamin Mako Hill <mako@atdot.cc>
+# This software comes with ABSOLUTELY NO WARRANTY.
+# This is free software and is licensed under the GNU GPL version 3 or
+# any later version.
+
+if (not $edited and m/^\s*\n$/) {
+ s/^\s*\n$/X-AttachCheck-Override: Yes\n\n/;
+ $edited = 1;
+}