Log in to the Abiquo API Server as an administrator
In the config folder, if there is no mail folder, create a mail folder and set the owner as the tomcat user
```
/opt/abiquo/config/mail
```
In the mail folder, create the following files

If your users have a language other than English, rename the file to change the language code to the user language
- For example, for "Spanish - Spain" change the en_US to es_ES
- The user language is the UI language when you create the user
Change the owner of the files to the tomcat user