The business hosted email is better instead of using a general mail for your business requires. Biggest and small businesses always use email hosting but startups and small and medium groups usually ignore the need for a professional email service. On the contrary, they choose to count on free mails like Google, Yahoo, and Bing. You have security measures to make your website secure but a general mail would leave a window opened for hackers to come in and steal sensitive data like passwords, documents and important customer communication. You can keep working even when your website is moved from one server to another. Your email from your website has another benefit that is keeping your mail free from downtime.