Existing alphanumeric Sender IDs cannot be updated or changed.
If you need to make a change then you will need to register a new alphanumeric Sender ID.
Learn how to get started with SMS by watching this step-by-step tutorial. The video explains the basics of SMS and shows you how easy it is to send your first message with Sinch:
Sign up to the Sinch Build Dashboard and get started today or take a look at the Sinch SMS Product page to learn more about our SMS products.
