diff --git a/db/migrate/20190712174818_add_indices_to_dmails.rb b/db/migrate/20190712174818_add_indices_to_dmails.rb
new file mode 100644
index 000000000..211de32dd
--- /dev/null
+++ b/db/migrate/20190712174818_add_indices_to_dmails.rb
@@ -0,0 +1,6 @@
+class AddIndicesToDmails < ActiveRecord::Migration[5.2]
+  def change
+    add_index :dmails, :from_id
+    add_index :dmails, :created_at
+  end
+end