diff --git a/public_html/wp-content/plugins/camptix-webhook/addons/webhook.php b/public_html/wp-content/plugins/camptix-webhook/addons/webhook.php
new file mode 100644
index 000000000..c644c14ae
--- /dev/null
+++ b/public_html/wp-content/plugins/camptix-webhook/addons/webhook.php
@@ -0,0 +1,222 @@
+<?php
+/**
+ * CampTix - Webhook
+ *
+ * An addon for CampTix that allows 3rd party integration via webhook.
+ *
+ * @package CampTix_Webhook
+ */
+
+namespace CampTix\Webhook\Addon;
+
+use CampTix_Addon;
+use CampTix\Webhook;
+
+/**
+ * Allows integration with 3rd party services via webhook.
+ */
+class CampTix_Webhook extends CampTix_Addon {
+
+	/**
+	 * Runs during CampTix init.
+	 */
+	public function camptix_init() {
+		global $camptix;
+
+		// Admin Settings UI.
+		if ( current_user_can( $camptix->caps['manage_options'] ) ) {
+			add_filter( 'camptix_setup_sections', array( $this, 'setup_sections' ) );
+			add_action( 'camptix_menu_setup_controls', array( $this, 'setup_controls' ), 10, 1 );
+			add_filter( 'camptix_validate_options', array( $this, 'validate_options' ), 10, 2 );
+
+			// Add js for testing webhook.
+			add_action( 'admin_enqueue_scripts', array( $this, 'admin_enqueue_scripts' ) );
+		}
+
+		add_action( 'save_post_tix_attendee', array( $this, 'trigger_webhook_async' ), 10, 2 );
+		add_action( 'camptix_webhook_trigger', array( $this, 'trigger_webhook' ) );
+	}
+
+	/**
+	 * Add a new section to the Setup screen.
+	 */
+	public function setup_sections( $sections ) {
+		$sections['webhook-ui'] = esc_html__( 'Webhook', 'wordcamporg' );
+
+		return $sections;
+	}
+
+	/**
+	 * Add some controls to our Setup section.
+	 */
+	public function setup_controls( $section ) {
+		global $camptix;
+
+		if ( 'webhook-ui' != $section ) {
+			return;
+		}
+
+		add_settings_section( 'general', esc_html__( 'Attendees Webhook', 'wordcamporg' ), array( $this, 'setup_controls_section' ), 'camptix_options' );
+
+		// Fields.
+		$camptix->add_settings_field_helper( 'webhook-enabled', esc_html__( 'Enabled', 'wordcamporg' ), 'field_yesno', 'general' );
+		$camptix->add_settings_field_helper( 'webhook-url', esc_html__( 'Webhook URL', 'wordcamporg' ), 'field_text', 'general', esc_html__( 'Webhook URL including protocol such as https://', 'wordcamporg' ) );
+
+		add_action( 'camptix_setup_buttons', array( $this, 'setup_buttons_test_webhook' ) );
+	}
+
+	/**
+	 * Runs whenever the CampTix option is updated.
+	 */
+	public function validate_options( $output, $input ) {
+		if ( isset( $input['webhook-enabled'] ) ) {
+			$output['webhook-enabled'] = (bool) $input['webhook-enabled'];
+		}
+
+		if ( ! empty( $input['webhook-url'] ) ) {
+			$output['webhook-url'] = sanitize_url( $input['webhook-url'] );
+		}
+
+		return $output;
+	}
+
+	/**
+	 * Setup section description.
+	 */
+	public function setup_controls_section() {
+		?>
+		<p><?php esc_html_e( 'Enable webhook when attendees data get created/updated.', 'wordcamporg' ); ?></p>
+
+		<p><strong><?php esc_html_e( 'Note: Please do test the webhook before you enable it.', 'wordcamporg' ); ?></strong></p>
+		<?php
+	}
+
+	/**
+	 * Setup buttons.
+	 */
+	public function setup_buttons_test_webhook() {
+		$button = '<button id="camptix-webhook-test-url" type="button" class="button button-secondary" name="camptix_action">' . esc_html__( 'Test Webhook', 'wordcamporg' ) . '</button>';
+
+		echo wp_kses_post( $button );
+	}
+
+	/**
+	 * Trigger webhook asynchronously.
+	 * Use cron to trigger webhook 5 seconds after attendee is updated.
+	 * So this process won't block the main process. And prevents multiple triggers.
+	 *
+	 * @param int     $post_id Attendee ID.
+	 * @param WP_Post $post Attendee Post Object.
+	 * @return void
+	 */
+	public function trigger_webhook_async( $post_id, $post ) {
+		// Trigger webhook asynchronously.
+		if ( ! wp_next_scheduled( 'camptix_webhook_trigger', array( $post_id ) ) ) {
+			wp_schedule_single_event( time() + 5, 'camptix_webhook_trigger', array( $post_id ) );
+		}
+	}
+
+	/**
+	 * Trigger webhook when attendee is updated.
+	 *
+	 * @param int $post_id Attendee ID.
+	 * @return void
+	 */
+	public function trigger_webhook( $post_id ) {
+		/** @var CampTix_Plugin $camptix */
+		global $camptix;
+
+		$camptix_options = $camptix->get_options();
+
+		$is_enabled  = isset( $camptix_options['webhook-enabled'] ) ? $camptix_options['webhook-enabled'] : false;
+		$webhook_url = isset( $camptix_options['webhook-url'] ) ? $camptix_options['webhook-url'] : '';
+
+		if ( ! $is_enabled ) {
+			return;
+		}
+
+		if ( empty( $webhook_url ) ) {
+			return;
+		}
+
+		$post = get_post( $post_id );
+
+		if ( 'tix_attendee' !== $post->post_type ) {
+			return;
+		}
+
+		$triggered_number = absint( get_post_meta( $post_id, 'tix_webhook_triggered_number', true ) );
+
+		// Get attendee data.
+		$attendee_data = array(
+			'timestamp' => time(),
+			'status' => $post->post_status,
+			'is_new_entry' => 0 === $triggered_number,
+			'tix_email' => get_post_meta( $post_id, 'tix_email', true ),
+			'tix_first_name' => get_post_meta( $post_id, 'tix_first_name', true ),
+			'tix_last_name' => get_post_meta( $post_id, 'tix_last_name', true ),
+			'tix_ticket_id' => get_post_meta( $post_id, 'tix_ticket_id', true ),
+			'tix_coupon' => get_post_meta( $post_id, 'tix_coupon', true ),
+		);
+
+		$attendee_data = apply_filters( 'camptix_webhook_attendee_data', $attendee_data, $post_id );
+
+		// Prepare webhook data.
+		$response = wp_remote_post(
+			$webhook_url,
+			array(
+				'body' => wp_json_encode( $attendee_data ),
+				'headers' => array(
+					'Content-Type' => 'application/json',
+				),
+			)
+		);
+
+		update_post_meta( $post_id, 'tix_webhook_triggered_number', $triggered_number + 1 );
+
+		// Log the response.
+		if ( is_wp_error( $response ) ) {
+			$this->log( sprintf( 'Webhook failed: %s', $response->get_error_message() ), $post_id, $response );
+		}
+
+		$this->log( 'Webhook triggered', $post_id, $response );
+	}
+
+	/**
+	 * Enqueue scripts for admin.
+	 *
+	 * @param mixed $hook Current page hook.
+	 * @return void
+	 */
+	public function admin_enqueue_scripts( $hook ) {
+		if ( 'tix_ticket_page_camptix_options' !== $hook ) {
+			return;
+		}
+
+		wp_enqueue_script(
+			'camptix-webhook-admin',
+			plugin_dir_url( Webhook\BASE_FILE ) . 'js/camptix-webhook-admin.js',
+			array(),
+			'1.0',
+			array(
+				'strategy' => 'async',
+				'footer' => true,
+			)
+		);
+	}
+
+	/**
+	 * Write a log entry to CampTix.
+	 */
+	public function log( $message, $post_id = 0, $data = null ) {
+		global $camptix;
+		$camptix->log( $message, $post_id, $data, 'webhook' );
+	}
+
+	/**
+	 * Register self as a CampTix addon.
+	 */
+	public static function register_addon() {
+		camptix_register_addon( __CLASS__ );
+	}
+}
diff --git a/public_html/wp-content/plugins/camptix-webhook/camptix-webhook.php b/public_html/wp-content/plugins/camptix-webhook/camptix-webhook.php
new file mode 100644
index 000000000..577ca0571
--- /dev/null
+++ b/public_html/wp-content/plugins/camptix-webhook/camptix-webhook.php
@@ -0,0 +1,43 @@
+<?php
+/**
+ * Plugin Name: CampTix - Webhook
+ * Description: An addon for CampTix that allows 3rd party integration via webhook.
+ * Version: 1.0
+ * Author: Ivan Kristianto
+ * Author URI: https://profiles.wordpress.org/ivankristianto/
+ */
+
+namespace CampTix\Webhook;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+const BASE_DIR  = __DIR__;
+const BASE_FILE = __FILE__;
+
+require_once __DIR__ . '/addons/webhook.php';
+require_once __DIR__ . '/inc/integration.php';
+
+/**
+ * Bootstrap the plugin.
+ *
+ * @return void
+ */
+function bootstrap() {
+	add_action( 'camptix_load_addons', __NAMESPACE__ . '\\camptix_webhook_register' );
+
+	Integration\bootstrap();
+}
+
+/**
+ * Register the webhook addon.
+ *
+ * @return void
+ */
+function camptix_webhook_register() {
+	Addon\CampTix_Webhook::register_addon();
+}
+
+// Bootstrap the plugin.
+bootstrap();
diff --git a/public_html/wp-content/plugins/camptix-webhook/inc/integration.php b/public_html/wp-content/plugins/camptix-webhook/inc/integration.php
new file mode 100644
index 000000000..1f9b52897
--- /dev/null
+++ b/public_html/wp-content/plugins/camptix-webhook/inc/integration.php
@@ -0,0 +1,169 @@
+<?php
+/**
+ * Camptix Webhook Integration
+ */
+
+namespace CampTix\Webhook\Integration;
+
+/**
+ * Register hooks.
+ */
+function bootstrap() {
+	add_action( 'load-tix_ticket_page_camptix_options', __NAMESPACE__ . '\\test_webhook_action' );
+
+	add_filter( 'camptix_webhook_attendee_data', __NAMESPACE__ . '\\add_attendees_admin_flag', 10, 2 );
+	add_filter( 'camptix_webhook_attendee_data', __NAMESPACE__ . '\\add_attendees_meta', 10, 2 );
+	add_filter( 'camptix_webhook_attendee_data', __NAMESPACE__ . '\\add_attendees_questions_answered', 10, 2 );
+}
+
+/**
+ * Test webhook action.
+ *
+ * This hook only run on camptix Tickets > setup page.
+ */
+function test_webhook_action() {
+
+	if ( ! isset( $_GET['test_webhook'] ) || '1' !== $_GET['test_webhook'] ) {
+		return;
+	}
+
+	/** @var CampTix_Plugin $camptix */
+	global $camptix;
+
+	$camptix_options = $camptix->get_options();
+
+	$webhook_url = isset( $camptix_options['webhook-url'] ) ? $camptix_options['webhook-url'] : '';
+
+	// Get attendee data.
+	$attendee_data = array(
+		'timestamp' => time(),
+		'status' => 'publish',
+		'is_new_entry' => true,
+		'tix_email' => 'camptix-webhook-test@wordcamp.org',
+		'tix_first_name' => 'Camptix Webhook',
+		'tix_last_name' => 'Test',
+		'tix_ticket_id' => '0000',
+		'tix_coupon' => 'Coupon_XXX',
+	);
+
+	// Post ID: -1 will invalid when getting post object. We use this to indicate that this is a test webhook.
+	$attendee_data = apply_filters( 'camptix_webhook_attendee_data', $attendee_data, -1 );
+
+	// Prepare webhook data.
+	$response = wp_remote_post(
+		$webhook_url,
+		array(
+			'body' => wp_json_encode( $attendee_data ),
+			'headers' => array(
+				'Content-Type' => 'application/json',
+			),
+		)
+	);
+
+	if ( is_wp_error( $response ) ) {
+		add_settings_error(
+			'camptix-webhook',
+			'error',
+			__( 'Webhook test failed: ', 'wordcamporg' ) . $response->get_error_message(),
+			'error'
+		);
+		return;
+	}
+
+	add_settings_error(
+		'camptix-webhook',
+		'success',
+		__( 'Webhook test success', 'wordcamporg' ),
+		'success'
+	);
+}
+
+/**
+ * Add attendees admin flag to attendee data.
+ *
+ * @param array $attendee_data Array of attendee data.
+ * @param int   $post_id Post ID.
+ * @return array
+ */
+function add_attendees_admin_flag( $attendee_data, $post_id ): array {
+	// Post ID: -1 will invalid when getting post object. We use this to indicate that this is a test webhook.
+	if ( -1 === $post_id ) {
+		$admin_flag                      = array( 'volunteer', 'speaker', 'organiser' );
+		$attendee_data['tix_admin_flag'] = $admin_flag[ array_rand( $admin_flag ) ];
+
+		return $attendee_data;
+	}
+
+	// Admin flag meta could be more than 1.
+	$attendee_data['tix_admin_flag'] = get_post_meta( $post_id, 'camptix-admin-flag', false );
+
+	return $attendee_data;
+}
+
+/**
+ * Add attendees meta to attendee data.
+ *
+ * @param array $attendee_data Array of attendee data.
+ * @param int   $post_id Post ID.
+ * @return array
+ */
+function add_attendees_meta( $attendee_data, $post_id ): array {
+	$allowed_meta = array(
+		'tix_accommodations',
+		'tix_allergy',
+		'tix_coupon',
+		'tix_first_time_attending_wp_event',
+	);
+
+	// Post ID: -1 will invalid when getting post object. We use this to indicate that this is a test webhook.
+	if ( -1 === $post_id ) {
+		$attendee_data['tix_accommodations']                = 'yes';
+		$attendee_data['tix_allergy']                       = 'no';
+		$attendee_data['tix_coupon']                        = 'test';
+		$attendee_data['tix_first_time_attending_wp_event'] = 'test';
+
+		return $attendee_data;
+	}
+
+	foreach ( $allowed_meta as $meta_key ) {
+		$attendee_data[ $meta_key ] = get_post_meta( $post_id, $meta_key, true );
+	}
+
+	return $attendee_data;
+}
+
+/**
+ * Add attendees questions answered to attendee data.
+ *
+ * @param array $attendee_data Array of attendee data.
+ * @param int   $post_id Post ID.
+ * @return array
+ */
+function add_attendees_questions_answered( $attendee_data, $post_id ): array {
+	// Post ID: -1 will invalid when getting post object. We use this to indicate that this is a test webhook.
+	if ( -1 === $post_id ) {
+		$attendee_data['answered'] = 'N/A';
+
+		return $attendee_data;
+	}
+
+	global $camptix;
+	$ticket_id = intval( get_post_meta( $post_id, 'tix_ticket_id', true ) );
+	$questions = $camptix->get_sorted_questions( $ticket_id );
+	$answers   = get_post_meta( $post_id, 'tix_questions', true );
+
+	$rows = array();
+	foreach ( $questions as $question ) {
+		if ( isset( $answers[ $question->ID ] ) ) {
+			$answer = $answers[ $question->ID ];
+			if ( is_array( $answer ) ) {
+				$answer = implode( ', ', $answer );
+			}
+			$rows[] = array( $question->post_title, $answer );
+		}
+	}
+
+	$attendee_data['answered'] = $rows;
+
+	return $attendee_data;
+}
diff --git a/public_html/wp-content/plugins/camptix-webhook/js/camptix-webhook-admin.js b/public_html/wp-content/plugins/camptix-webhook/js/camptix-webhook-admin.js
new file mode 100644
index 000000000..470827adb
--- /dev/null
+++ b/public_html/wp-content/plugins/camptix-webhook/js/camptix-webhook-admin.js
@@ -0,0 +1,30 @@
+/**
+ * Add event listener to test button.
+ */
+function addEventHandler() {
+	const testWebhookButton = document.getElementById( 'camptix-webhook-test-url' );
+
+	if ( ! testWebhookButton ) {
+		return;
+	}
+
+	testWebhookButton.addEventListener( 'click', function ( event ) {
+		event.preventDefault();
+
+		try {
+			// Get current url.
+			const url = new URL( window.location.href );
+
+			// Add search param test_webhook to url.
+			url.searchParams.append( 'test_webhook', '1' );
+
+			// Redirect to new url.
+			window.location = url.href;
+		} catch ( error ) {
+			// Do nothing.
+		}
+	} );
+}
+
+// Run event listener when window load.
+window.addEventListener( 'load', addEventHandler );