What parameter selects the language used by any UserEcho project in the e-mail notifications sent to the user.
- It seems not be related to the project parameter defining the language for the forums.
- Since there is not "preferred" language in the User profile, I guess it can be related to the last language selected manually by the user on any web pages of a UserEcho project? (Thus defined for all the notifications sent by all the projects?)
Is it so?