diff --git a/application/Espo/Core/Select/Text/DefaultFilter.php b/application/Espo/Core/Select/Text/DefaultFilter.php
index 77a93fae6b..18bab91708 100644
--- a/application/Espo/Core/Select/Text/DefaultFilter.php
+++ b/application/Espo/Core/Select/Text/DefaultFilter.php
@@ -104,6 +104,14 @@ class DefaultFilter implements Filter
             return;
         }
 
+        if (
+            !str_contains($attribute, '.') &&
+            $this->metadataProvider->getFieldType($this->entityType, $attribute) === 'email' &&
+            str_contains($filter, ' ')
+        ) {
+            return;
+        }
+
         $expression = $filter;
 
         if (!$skipWildcards) {
diff --git a/application/Espo/Core/Select/Text/MetadataProvider.php b/application/Espo/Core/Select/Text/MetadataProvider.php
index a58d3ab81a..f81d6774d8 100644
--- a/application/Espo/Core/Select/Text/MetadataProvider.php
+++ b/application/Espo/Core/Select/Text/MetadataProvider.php
@@ -120,6 +120,17 @@ class MetadataProvider
             ->getType();
     }
 
+    public function getFieldType(string $entityType, string $field): ?string
+    {
+        $entityDefs = $this->ormDefs->getEntity($entityType);
+
+        if (!$entityDefs->hasField($field)) {
+            return null;
+        }
+
+        return $entityDefs->getField($field)->getType();
+    }
+
     public function getRelationEntityType(string $entityType, string $link): ?string
     {
         $relationDefs = $this->ormDefs