If you’re looking to do 2-way SMS you need a short code. Having your own short code is a way for customers to recognise you in the mobile world. It provides you with a unique identity and the ability to generate revenue through your txt services. Another name for short codes and long codes is two way numbers, because they allow people to reply to your SMS messages. This is also known as 2-way SMS.
The difference between a short code and a long code is where short code is a memorable number between 3 and 7 digits in length, which your customers, suppliers or employees can use to reply to your messages. They are ideal for SMS marketing campaigns and promotions when you want people to easily remember your number or if you want to encourage conversations between you and your audience.
Short codes are country specific and can’t be used if you want to receive replies from international destinations. Short codes work across all major mobile operators. Mobile users receiving or sending messages to short codes are not charged any additional fees. Dedicated short codes are also expensive to run, so they are normally used on a ‘shared’ basis.