How can customers reply to my messages? To your Promotional or Transactional SMS, your customer can not reply directly as they sent with Sender ID. In your message, you can use short code or long code and your customers can use these to reply your message. Updated on December 17, 2017 Was this article helpful? Yes No Related Articles How to check SMS delivery report? How to check SMS account balance ? I don’t want to renew my account, then what should I do? If I not renew account within 30 days then what happen? Additional Sender id Setup Process How Can I send Custom SMS ?