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Code Block
Format: "Authorization: Basic " + Base64(username:password)
Example: username=m1234, password=hello123, Base64(m1234:hello123)=bTEyMzQ6aGVsbG8xMjM=  => Authorization: Basic bTEyMzQ6aGVsbG8xMjM=

Once you have obtained the value of the ListSecret parameter:

  • you can start sending transactional text messages (see example below)
  • basic authentication is no longer required in those API calls

Retrieving, creating, and deleting the ListSecret parameter


Sending a transactional SMS


The example below sends an SMS to the number +393350000001