diff --git a/app/config/collections.php b/app/config/collections.php
index f8254bf889..e0de790da3 100644
--- a/app/config/collections.php
+++ b/app/config/collections.php
@@ -655,6 +655,17 @@ $collections = [
                 'array' => false,
                 'filters' => ['json'],
             ],
+            [
+                '$id' => ID::custom('smtp'),
+                'type' => Database::VAR_STRING,
+                'format' => '',
+                'size' => 16384,
+                'signed' => true,
+                'required' => false,
+                'default' => [],
+                'array' => false,
+                'filters' => ['json', 'encrypt'],
+            ],
             [
                 '$id' => ID::custom('auths'),
                 'type' => Database::VAR_STRING,