BuddyPress.org

Hello,
I want to have my buddypress emails in my own language. So I followed this tutorial here:

Languages and Translations

and copied the mo and po files into wp-content / languages/ buddypress.

But the emails still remain in English even after making an email restore. Is it, because I am using the English WordPress version? But my site language is set to my language and the buddypress menus etc are all translated to this except the emails.

Do I have to translate it manually or whats the way to go? Thanks for helping me out!