[luk3thomas]

Yep, all the source code is in the page.

view-source:http://luk3thomas.com/labs/gmail-archive-for-2013-20140224.h...

The hard part is parsing your gmail.mbox file from google takeout. You can use `egrep '^From [0-9]|X-Gmail-Labels' gmail.mbox` as a good starting place for finding the labels and dates for each email. Personally, once I had the data I stored that data in a SQL database and ran an aggregate query to count the emails for each label every month.

I'm sure there is a better way to do it.