# This migration comes from mailboxer_engine (originally 20151103080417) class AddDeliveryTrackingInfoToMailboxerReceipts < ActiveRecord::Migration def change add_column :mailboxer_receipts, :is_delivered, :boolean, default: false add_column :mailboxer_receipts, :delivery_method, :string add_column :mailboxer_receipts, :message_id, :string end end