diff --git a/db/migrate/20160425141954_fix_incoming_emails_indices.rb b/db/migrate/20160425141954_fix_incoming_emails_indices.rb
new file mode 100644
index 00000000000..4fa6366343a
--- /dev/null
+++ b/db/migrate/20160425141954_fix_incoming_emails_indices.rb
@@ -0,0 +1,5 @@
+class FixIncomingEmailsIndices < ActiveRecord::Migration
+  def change
+    add_index :incoming_emails, :post_id
+  end
+end