s://docs.retellai.com/deploy/enable-sms) [(2) ]() [(3) ]() .

### Answer To send SMS using Retell's number without A2P verification during a call, you can use an SMS-approved Retell number [(1) ]() [(2) ]() [(3) ]() . This option bypasses the A2P application process entirely . How it works: When you configure your SMS node or tool, select the option to send from an SMS-approved Retell number [(2) ]() [(3) ]() . A number from Retell's pool of SMS-approved numbers is automatically selected for each call, and all SMS sent within the same call use the same number [(1) ]() . Important limitations: - The message content is a preset template provided by Retell — you cannot customize the text or use a prompt [(1) ]() [(2) ]() [(3) ]() - This option is for in-call SMS only and does not support two-way SMS conversations [(1) ]() - No setup or approval steps are needed — you can start sending right away Setup options: - **For Conversation Flow**: Use the SMS Node and select "SMS-approved Retell number" as the sending option [(3) ]() - **For Single/Multi Prompt**: Use the Send SMS tool and select "SMS-approved Retell number" as the sending option [(2) ]() This allows you to send SMS during active phone calls without going through the A2P verification process [(1) ](http

​ To learn more, see the sources I considered: [[1] Send & receive SMS](https://docs.retellai.com/deploy/enable-sms) [[2] Send SMS](https://docs.retellai.com/build/single-multi-prompt/send-sms) [[3] SMS Node](https://docs.retellai.com/build/conversation-flow/sms-node) ​

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.