What is the OPAQUE-USER-ID for sending text message through api.https://developer.apple.com/documentation/businesschatapi/messages_sent/sending_text_messages
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Can i use apple business chat account to send mesage and imessage without Messaging Service Platform (MSP).https://developer.apple.com/documentation/businesschatapi/integrating_with_business_chatWhat is the response of message send api
Is there any free imessage API available to send imessage on apple using java or python