Thanks to Christian Kern, there is now a native German version of PHPFormMail. Translated files include the main script (even the error messages are in German) and the readme file.
There is a new forum to go along with the new translated PHPFormMail. Stop by and visit the Languages forum if you prefer to discuss PHPFormMail in a language other than English. This forum is also for any errors or any suggestions you might have for a translated version.
Contact me if you would like to volunteer your time and translate the latest version of PHPFormMail. (Sorry, but I only speak English)