Most companies will prefer a third-party solution since not only will these be more capable, they'll also be supported more effectively by related back-end apps, such as mobile device management (MDM) platforms and mobile-oriented endpoint protection solutions. You'll also have an easier time pushing a third-party platform out to registered client devices, though some hosted email providers can help with this step.
Every web address begins with "www." This is an abbreviation for World Wide Web and is the gateway to the internet. Nowadays, domain names do not necessarily have to have a "www" in front of them because web browsers automatically recognize them. The next part, the second level, is the most important recognition factor – the domain name. Think of a domain name that best reflects the content and subject of your website.