Give all your work emails a professional makeover by owning a business domain and creating custom domain email addresses for your team. When it comes to communication between different organizations or businesses, the most formal and reliable way is to send emails. To make your brand stand out and look authentic, all official communication should come from custom email addresses that contain your business’ domain—for instance, user@yourdomain.com. You can get started by creating a domain for your business and then setting up custom email addresses in your domain.