public function up()
{
Schema::table('responsiv_campaign_subscribers', function ($table) {
$table->string('created_ip_address')->nullable();
$table->string('confirmed_ip_address')->nullable();
$table->timestamp('confirmed_at')->nullable();
$table->string('message_type')->nullable()->default('html');
});
SubscriberModel::whereNull('confirmed_at')->update(['confirmed_at' => new Carbon()]);
}
