SMS Node

The SMS node sends a text message to a phone number during a conversation. It supports variable interpolation and shows a real-time character count with SMS segment calculation.

When to Use

• You want to send an SMS confirmation or notification during a conversation.
• You need to reach the user on their phone when they are not in the chat widget.
• You want to send a verification code or one-time link via text.
• You need to notify a third party (e.g., a support agent) by SMS.

Configuration

Property	Description	Default
To (Phone Number)	Recipient phone number. Supports {{variable}} interpolation (e.g., {{user_phone}}).	Empty (required)
Message	The SMS body text. Supports {{variable}} interpolation.	Empty (required)

The configuration panel shows a real-time character count (X/160) and the number of SMS segments the message will consume.

Advanced Settings

Property	Description	Default
From Number	Override the default sending phone number (optional).	Workspace default

imageSMS node config panel showing phone number input field with variable interpolation, message body text area with real-time character count showing segments, and optional From Number override

SMS node configuration panel

Handles

Handle	Direction	Description
Input	In	Receives execution from the previous node
Output	Out	Continues to the next node after the SMS is sent

TIP

Standard SMS messages are limited to 160 characters per segment. Messages longer than 160 characters are split into multiple segments, which may increase cost. The character counter in the config panel helps you monitor message length.

WARNING

The SMS node requires a configured telephony integration with SMS capability. If no telephony integration is available, the node will fail at runtime.