You can run a multi-language website or blog with many supporting HubSpot features by leveraging “multi-language groups”. HubSpot shows a language switcher only for posts in multiple languages and only for those languages, the post is available in. Blog post subscriptions are language-specific and only go to those who subscribed to that language. The language-specific URL components can be added automatically by HubSpot, without any additional code needed.
See an example here, the history of inbound marketing. DM me for specific support help.