Also In ordasoft
joomla membership if you create multi language site, All messages from admin area or group name - you may add as "Joomla language constant".
With help Joomla Language manager :
Extensions->Languages->overrides , select you site languafe, Press "New" , create your constant, and add this constant, to Ordasoft joomla membership - as email message, or "User group name"
Regards
OraSoft team