If the user has not or cannot specify a Default Language (if this option was removed from the Preferences page), update this property in emxSystem.properties to define the languages to include in email notifications:
emxFramework.NotificationLanguages = en
The language must have a corresponding emxFrameworkStringResource.properties file. By
default, these languages are English (en), French (fr), German (de), Italian (it), and Japanese
(ja).
The message text of each system-generated notification is repeated in all of the languages you
specify. The subject will be in the first language listed. Use the standard abbreviation for each
language and separate languages by a space. For example, if you enter the value "en fr de", the
subject of all system emails will be in English and each message will be repeated in English,
French, and German.
Only messages with translated text defined in the appropriate emxFrameworkStringResource.properties file can be internationalized; ad hoc messages created by users cannot be internationalized. When a user creates an ad hoc message, all recipients receive the message in the language used by the message creator.
See About Internationalizing for details on how the system determines which languages to use for send notifications.