If you want to edit the MailChimp Module's labels, or change them to your language, we've made it easier.You can change the default labels by going to Extensions >> Language Manager and searching for the label value or constant. You can also change the default labels by editing the file: /language/en-GB/en-GB.mod_mailchimp2.ini
Change the text in double quotes to your custom message.
Advanced users can create a new language file instead. If you would like to contribute a translation in your language, please send it our way.