Sender ID a powerful identification of your company. A unique Identity which represent your brand once your SMS gets reach to your audience. An SMS Sender ID (or sender name) is the displayed value of who sent the message on your handset. For example, the Sender ID of your friend is their phone number in terms of normal messaging from M2M (Mobile to Mobile ). If you are using any Bulk SMS gateway services It can be a short code, such as 12302 called numeric sender in promotional Or contain a limited number of characters, e.g. MYNTRA called alphabetic sender in Transnational route.
Country to country it vary and for India as per the standard TRAI rules it can be of limited 6 alphabetic characters. Some other type of senders are like alpha numeric, dynamic, fixed dynamic, short numeric etc.
The best way to represent your brand is to choose a smart sender like well known brands are using SBIBNK, HDFCBK, FlPKRT so choose a sender ID wisely and this will help you to become more identical in your user phone.