diff --git a/delete_old_mail.sh b/delete_old_mail.sh
new file mode 100755
index 0000000..6a91c72
--- /dev/null
+++ b/delete_old_mail.sh
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+min_date="$(date -d '-1 day' +%s)"
+sql="DELETE FROM mails WHERE mails.arrived_at < $min_date;"
+
+echo "$sql" | sqlite3 db.db
+