Obtain Statistics about an MBOX
The email header records important information about that particular email. A collection of emails in an "MBOX" can be used to compile statistical results. This example uses a mailing list archive taken from here.
Assuming the downloaded MBOX is stored in file, create a word cloud of all words used in email subjects.
Create a date histogram of all emails in the mailbox.
This is the histogram for the time of the day emails were sent.
Finally, here is a visualization for the number of emails sent by each person.