diff --git a/tools/set_ttl_to_30_minutes.sh b/tools/set_ttl_to_30_minutes.sh
new file mode 100755
index 00000000..312fb5e3
--- /dev/null
+++ b/tools/set_ttl_to_30_minutes.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+sed -i "s/^TTL=.*/TTL=1800/" /etc/mailinabox.conf
\ No newline at end of file