The best way would be OBIEE just as you mentioned (not only via the mentioned report, however), but if you are not happy with using OBIEE you might as well use for example export from Activity API endpoint (still - OBIEE is better for simple report - especially if you are sending quite a lot of e-mails).
Hi Yi Jing,
You should be able to assign yourself an OBIEE user license at this point after the release of 18D under Users. Within that, you can build a quick report with Email Sent Date, Email Name, Email ID and etc (whichever fields you need), and set a filter on sent date column to be within the year 2018. On top of that, depending on how you chain the columns, you could even break it down by Countries, Contact, Sent Date, Email Asset and etc and just use the totals on the bottom too.
Hong Tai Lee
Great! thanks for the detailed breakdown!