Currently, companies like Sogou, Microsoft, and Google offer free enterprise email services. I started using Sogou first. When I initially used Sogou, everything was relatively normal, but as time went on, the amount of spam emails increased significantly, sometimes reaching dozens per day. It would take several minutes just to sort through them, and then I had to delete them manually, which was extremely inconvenient. Eventually, I decided to switch to Gmail. Among all the email services I have used, Gmail is undoubtedly the best. It has fewer ads, no need to manually delete emails, convenient email search functionality, enormous storage capacity, and an excellent attachment feature, among others. If we were to compare email services to fighter jets, Gmail would be the top performer . The core of the enterprise email service provided by Google Apps is Gmail. Google Apps also provides other services such as Google Talk, Google Calendar, and Google Page Creator.