* Parse recipients from the DOM has not been reliable for generic webmail * @return {Promise.<Array>} The recipient objects in the form { email:

* Parse recipients from the Yahoo Webmail interface * @return {Promise.<Array>} The recipient objects in the form { email: 'jon@example.com' }

* Extract sender * @return {Promise.<Array>} sender object in the form { email: 'jon@example.com' }

* Extract sender * @param {HTMLElement} emailElement - DOM element of displayed email content * @return {Promise.<Array>} sender object in the

* Is called when the user clicks the cancel button.