diff --git a/db/migrations/20230606151521_add_index_to_sms_timestamps.php b/db/migrations/20230606151521_add_index_to_sms_timestamps.php
new file mode 100644
index 0000000..53228de
--- /dev/null
+++ b/db/migrations/20230606151521_add_index_to_sms_timestamps.php
@@ -0,0 +1,24 @@
+<?php
+
+use Phinx\Migration\AbstractMigration;
+
+class AddIndexToSmsTimestamps extends AbstractMigration
+{
+    /**
+     * Add indexes on most SMS table timestamp (and possibly other fields) to improve perfs on query using date, like stats, sending limits, etc.
+     */
+    public function change()
+    {
+        $table = $this->table('sended');
+        $table->addIndex('at');
+        $table->update();
+
+        $table = $this->table('received');
+        $table->addIndex('at');
+        $table->update();
+
+        $table = $this->table('scheduled');
+        $table->addIndex('at');
+        $table->update();
+    }
+}