Vulcan/packages/vulcan-admin/lib/components/users/columns/AdminUsersEmail.jsx

import React from 'react';
import Users from 'meteor/vulcan:users';
import { Components } from 'meteor/vulcan:core';

const AdminUsersEmail = ({ document: user }) =>
  <a href={`mailto:${Users.getEmail(user)}`}>{Users.getEmail(user)}</a>

export default AdminUsersEmail;