# Twilio

Using [Twilo ](https://www.twilio.com)you can enable ngSurvey to interact with WhatsApp respondents as such if you would like to use the [WhatsApp conversational surveys](/conversational-surveys.md) features it is mandatory to have a registered Twilio account along a Facebook Business Manager account.

## Main setup

To register for a Twilio account and setup it with WhatsApp please follow the official [Twilio / WhatsApp setup ](https://www.twilio.com/docs/whatsapp/tutorial/connect-number-business-profile) documentation.

## Callback URL

Once you have setup your Twilio account with WhatsApp you need to link ngSurvey and Twilio using a callback URL. 

1\) Find your ngSurvey callback URL in your account / [system settings](/installation-setup/system-settings.md) page.

![](/files/-MJGG2RBphWf_IiWLFgI)

2\) Copy this URL 

3\) Open the Twilio [WhatsApp Senders user interface](https://www.twilio.com/console/sms/whatsapp/senders) 

4\) Click on the Configure button on the WhatsApp number that you will use in ngSurvey

5\) Paste the callback URL that you have copied on step 2.

![](/files/-MJGKAVPHS4V8Jnn4i4Q)

6\) Click Configure. That's it! From now on Twilio will notify your ngSurvey server on each new WhatsApps messages.

## NGSurvey setup

Once you have setup Twilio the last step is to save your Twilio account settings in your ngSurvey account or [system settings](/installation-setup/system-settings/mobile-messenging/twilio.md) page, once this is done you will be ready to use your Twilio WhatsApp enabled number to start conversation with your customers.


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