In the Messages tab, you can use a shortcode such as:
[alg_wc_ev_translate lang=”EN”]Text for EN[/alg_wc_ev_translate][alg_wc_ev_translate lang=”DE”]Text for DE[/alg_wc_ev_translate][alg_wc_ev_translate not_lang=”EN,DE”]Text for other languages[/alg_wc_ev_translate]
This way you can translate the text for various notices in the Messages tab. However, multi-language in the email text will not work.