Send confirmation email to client after entries have been reviewed and approved

I have now coded a way to send a confirmation email from the admin entry page. I will share it here in case others might need this function. :-)

// ------------------------------------------------------------------------------------
// ------------------------------------------------------------------------------------
/**
* Gravity form - add a send confirmation email to entry admin panel.
*/
add_action("gform_entry_info", "confirmation_button", 10, 2);
function confirmation_button($form_id, $lead) {

    if(!class_exists("GFEntryDetail"))
		require_once(GFCommon::get_base_path() . "/entry_detail.php");

	if(!class_exists("RGFormsModel"))
		require_once(GFCommon::get_base_path() . "/forms_model.php");

	if(!class_exists("GFCommon"))
		require_once(GFCommon::get_base_path() . "/common.php");

	if( class_exists("RGFormsModel") && class_exists("GFCommon") ) { ?>

		<h4>Send email</h4>
		<p>Send a confirmation email to the user</p>
		<input type="submit" name="send_admin_notification" value="<?php _e("Send to user", "gravityforms") ?>" class="button" style="width:100px;" onclick="jQuery('#action').val('send_user_notification');"/>

		<?php

		if( isset($_POST['action']) && trim($_POST['action']) === 'send_user_notification' ) {

			// Initiate the form
			$form = RGFormsModel::get_form_meta($form_id);

			// The AutoResponder is not activated in the admin, so activate it here by giving it the ID number of the email field.
			$form["autoResponder"]['toField'] = 31;

			// Send an email to the user
			GFCommon::send_user_notification($form, $lead);

			// Send email to the admin
			//GFCommon::send_admin_notification($form, $lead);

			echo '<p>The email has been sendt.</p>';

		}

	}

}

If there is a better way to do this I am certainly open for suggestions.

Vayu