discourse/app/assets/javascripts/admin/addon/routes/admin-email-incomings.js

import DiscourseRoute from "discourse/routes/discourse";
import IncomingEmail from "admin/models/incoming-email";

export default class AdminEmailIncomingsRoute extends DiscourseRoute {
  model() {
    return IncomingEmail.findAll({ status: this.status });
  }

  setupController(controller) {
    super.setupController(...arguments);
    controller.set("status", this.status);
  }
}