Leaders can text in their members in more than one language (provided they are able to write in the language of course).
Community leaders with members who speak additional languages can use specific words that come up often, and/or can use a specific keyword to opt into an {Insert Language} Speaking Community.
One important thing to note, is regardless of the messages sent/received, special characters (such as “ñ“ or ”á”) cannot be used in a community keyword.