Add mail (John Cummings)
diff --git a/src/cmd/acme/mail/mkbox b/src/cmd/acme/mail/mkbox
new file mode 100644
index 0000000..e3639ae
--- /dev/null
+++ b/src/cmd/acme/mail/mkbox
@@ -0,0 +1,11 @@
+#!/bin/rc
+
+for(i){
+	if(! test -f $i){
+		if(cp /dev/null $i){
+			chmod 600 $i
+			chmod +al $i
+		}
+	}
+	if not echo $i already exists
+}