The action CSV and OUTLOOK_CSV will get enhanced by a new optional parameter named charset allowing to define the character encoding explicitly. The charset name is expected to follow the conventions documented in RFC 2278. The supported charsets may vary based on the underlying JVM, however, the most common ones should usually work.

See http://oxpedia.org/index.php?title=HTTP_API#Import_CSV and http://oxpedia.org/index.php?title=HTTP_API#Import_Outlook_CSV for details.