Twilio SMS
Audience: Admins, Developers, Solution Architects
Purpose: Explains how to connect a Twilio account to Kizen for SMS messaging, outlines configuration requirements and limitations, and clarifies A2P 10DLC compliance responsibilities.
Overview
Kizen supports SMS messaging through direct integration with Twilio. This integration allows a business to connect its own Twilio account to Kizen and use that account to send SMS messages through:
Bulk messaging to Contacts
Agentic Workflows
Employee messaging (where applicable)
Kizen does not provision Twilio accounts or phone numbers. Businesses must create and manage their own Twilio account. Once configured, Kizen sends SMS messages using the credentials provided by the business.
All United States–based SMS traffic is treated as A2P (Application-to-Person) messaging and must comply with the US A2P 10DLC framework. Requirements for SMS messaging outside the United States are governed by the regulations and carrier policies of the destination country.
What Is A2P 10DLC?
A2P 10DLC (Application-to-Person 10-Digit Long Code) is a US carrier compliance framework that requires businesses to:
Register their brand
Register messaging campaigns (use cases)
Use approved 10-digit long code phone numbers
Associate messaging traffic with a registered campaign
For more information, read Twilio's article: What is A2P 10DLC?.
How Does Twilio Integration Work?
Kizen uses a direct credential-based integration model.
The business provides:
Twilio Account SID
Twilio Auth Token
A single Twilio phone number
Kizen uses these credentials to call the Twilio API on behalf of the business.
Importantly, Kizen does not:
Create Twilio subaccounts
Manage Twilio Messaging Services
Provision phone numbers
Manage A2P registration on behalf of the business
All Twilio configuration occurs within the business’s Twilio account. The Twilio account remains fully owned and managed by the business. Learn about how to Configure the Twilio SMS integration.
How SMS Messages Are Delivered
When Kizen sends an SMS message, the message is submitted to Twilio using the configured integration credentials. Twilio then:
Routes the message through its carrier network to the destination phone number.
Provides the delivery status and error details in the Twilio Console.
If a message fails to send or deliver, the cause can typically be identified in Twilio logs. SMS delivery depends on the configuration, compliance status, and messaging permissions of the connected Twilio account.
Note: SMS messages sent through Twilio from Kizen consume messaging credits associated with your license. Ensure your business has sufficient messaging credits available before sending high-volume or automated SMS messages.
What’s Next
After configuring Twilio:
Set up SMS Agentic Workflows
Configure bulk SMS campaigns
Ensure proper consent collection processes are in place
Complete A2P registration in Twilio (if sending US traffic)
Monitor Twilio logs for delivery performance
Before scaling SMS usage, verify compliance and registration status directly in Twilio. Read more about the Twilio integration with the topics below
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