Congratulations! Now you know the capabilities, security features, and protocols of Gmail for Business, allowing you to perform the necessary configurations for a new or existing domain. 

Unwanted emails waste time and can lead to all kinds of security problems. In this chapter, you have learned how to configure spam detection, routing, and analysis. We also learned how to set trusted emails and domains, and how to enforce validations using security protocols and certificates.

You also learned how to allow users to delegate access to others in a safe way and how to create groups so users can subscribe or send messages to colleagues who are interested in a specific task or topic.

A number of corporations own private servers or are migrating from Microsoft Outlook, so now you know how to integrate different mailing services with Microsoft Outlook or other third-party services, or even fully bypass Gmail and route everything to private instances. With this knowledge, you should be ready to handle even complex requirements.

Email is just one of the many ways G Suite for Business facilitates communication and coordination. In the next chapter, we will learn about team collaboration with G Suite, where we will explore how to make best use of the platform to take the team's collaboration and communication to the next level.