Translation problem on user welcome

Hello!
i'm translating my portal into hungarian language. auto language detection is on. If a hungarian wants to register, the registration is in hungarian language, BUT as he got the welcome mail with activation link, it's english!! Although, i've translated User welcome tpl and some other tpl as well in language/lang_hungarian/email/ folder. So i dont understand why the system send to user the english version instead my hungarian version?!
Help pls! <img>
i'm translating my portal into hungarian language. auto language detection is on. If a hungarian wants to register, the registration is in hungarian language, BUT as he got the welcome mail with activation link, it's english!! Although, i've translated User welcome tpl and some other tpl as well in language/lang_hungarian/email/ folder. So i dont understand why the system send to user the english version instead my hungarian version?!
Help pls! <img>