diff --git a/app/config/collections/common.php b/app/config/collections/common.php
index 2b3d10e457..d8e1c1699a 100644
--- a/app/config/collections/common.php
+++ b/app/config/collections/common.php
@@ -364,6 +364,17 @@ return [
                 'array' => false,
                 'filters' => ['datetime'],
             ],
+            [
+                '$id' => ID::custom('emailCanonical'),
+                'type' => Database::VAR_STRING,
+                'format' => '',
+                'size' => 320,
+                'signed' => true,
+                'required' => false,
+                'default' => null,
+                'array' => false,
+                'filters' => [],
+            ],
             [
                 '$id' => ID::custom('emailIsFree'),
                 'type' => Database::VAR_BOOLEAN,