Hi @ondrej Thanks for responding back, My context is to identify post according to languages, For example how multilingual plugin helps by changing the content language. But in that case the users has to select the language in which they would type the post. (which becomes a content language tag). Your suggestion is to filtering users but not users post’s language (if i understood correct). But I am looking for a solution which auto detects the language of users post. Without asking them to add a language tag or asking a mod to add a language tag. something which does the job automatically for the moderators to filter post according to a language.