FS-4847 try this too

src/switch_utils.c

@@ -881,7 +881,7 @@ SWITCH_DECLARE(switch_bool_t) switch_simple_email(const char *to,
 		from = "freeswitch";
 	}
 #ifdef WIN32
-	switch_snprintf(buf, B64BUFFLEN, "type %s | \"%s\" -f %s %s %s", filename, runtime.mailer_app, from, runtime.mailer_app_args, to);
+	switch_snprintf(buf, B64BUFFLEN, "type \"%s\" | \"%s\" -f %s %s %s", filename, runtime.mailer_app, from, runtime.mailer_app_args, to);
 #else
 	switch_snprintf(buf, B64BUFFLEN, "/bin/cat %s | %s -f %s %s %s", filename, runtime.mailer_app, from, runtime.mailer_app_args, to);
 #endif