This is the most important part of EDA. This is the part where we gain insights from the data that we have.

Let's answer the following questions one by one:

1. How many emails did I send during a given timeframe? 
2. At what times of the day do I send and receive emails with Gmail?
3. What is the average number of emails per day?
4. What is the average number of emails per hour?
5. Whom do I communicate with most frequently?
6. What are the most active emailing days?
7. What am I mostly emailing about?

In the following sections, we will answer the preceding questions.