Thanks lilian for your remarks. I've just corrected the translation. Couldn't your send your messages to my inbox next time, since I don't know when the messages concerning my translations are sent? Unexpectedly, I found them in the common list today (it takes time browsing this list). Thank you in advance!
Yes it is automatic, but yuo can deactivate it on your profile. Also it can happens that email notifications don't arrive because of over spam checking by the email providers.