discourse/app/assets/javascripts/admin/addon/models/email-settings.js

import { ajax } from "discourse/lib/ajax";
import EmberObject from "@ember/object";

const EmailSettings = EmberObject.extend({});

EmailSettings.reopenClass({
  find: function () {
    return ajax("/admin/email.json").then(function (settings) {
      return EmailSettings.create(settings);
    });
  },
});

export default EmailSettings;