This tool is used to send an one way SMS from the current agent number to the user’s number. It only works in phone call.
This node only works for phone number that has SMS enabled. Currently only Retell Twilio number can enable SMS. Read more about enabling SMS.
The agent would tell user that the SMS is being sent when invoking this tool.

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Configure SMS content

You can write a prompt to let the agent infer the SMS content, or use static SMS content. Dynamic variable is supported for static SMS content.