Registration form Webhook

@webcart

/**
	 * UM hook
	 *
	 * @type action
	 * @title um_user_after_updating_profile
	 * @description After upgrade user's profile
	 * @input_vars
	 * [{"var":"$submitted","type":"array","desc":"Form data"},
	 * {"var":"$user_id","type":"int","desc":"User Id"}]
	 * @change_log
	 * ["Since: 2.0"]
	 * @usage add_action( 'um_user_after_updating_profile', 'function_name', 10, 1 );
	 * @example
	 * <?php
	 * add_action( 'um_user_after_updating_profile', 'my_user_after_updating_profile'', 10, 2 );
	 * function my_user_after_updating_profile( $submitted, $user_id ) {
	 *     // your code here
	 * }
	 * ?>
	 */
	do_action( 'um_user_after_updating_profile', $to_update, $user_id, $args );

@webcart

You can look at this hook too.

/**
	 * Fires after complete UM user registration.
	 * Note: Native redirects handlers at 100 priority, you can add some info before redirects.
	 *
	 * Internal Ultimate Member callbacks (Priority -> Callback name -> Excerpt):
	 * 10  - <code>um_send_registration_notification()</code> Send notifications.
	 * 100 - <code>um_check_user_status()</code>              Redirect after registration based on user status.
	 *
	 * @since 2.0
	 * @hook um_registration_complete
	 *
	 * @param {int}   $user_id        User ID.
	 * @param {array} $submitted_data $_POST Submission array.
	 * @param {array} $form_data      UM form data. Since 2.6.7
	 *
	 * @example <caption>Make any common action after complete UM user registration.</caption>
	 * function my_registration_complete( $user_id, $submitted_data, $form_data ) {
	 *     // your code here
	 * }
	 * add_action( 'um_registration_complete', 'my_registration_complete', 10, 3 );
	 */
	do_action( 'um_registration_complete', $user_id, $args, $form_data );

@webcart

You will find a subset of the UM Hooks here:

https://ultimatemember.github.io/ultimatemember/hooks/