In recent times I have started receiving a lot of spam in French. Despite flagging this as spam, spamseive doesn’t seem to identify that english speaking people might consider any email in another language as spam. I know some people will multi-lingual emails, but the application should be able to be set up to filter some languages.
Normally, it’s easy for SpamSieve to automatically identify messages in other languages as spam, because most of the words are different. If this is not happening for you, please send in a report via e-mail.