1) Can one send user e-mail in their language of choice?

For example, password reset request e-mail should go out in German if user has set German as their preferred language when viewing pages.

Instead of receiving e-mail in only English (default language), what I ended up sending in an test e-mail looked like this:

FROM: mysite

TO: someone@a.a

[lang=default]Someone requested that the password be reset for the following user account:

Username [username] on site "mysite"

If this was a mistake, just ignore this email and nothing will happen.[/lang]
[lang=es]Alguien pidió que la contraseña se restablecerá para la cuenta de usuario siguiente:

Usuario [username] en la página "mysite"

Si esto fue un error, simplemente ignore este mensaje y no pasará nada.[/lang]
[lang=de]Jemand beantragt, dass das Kennwort für das folgende Benutzerkonto zurückgesetzt werden:

Benutzername [username] Ort "mysite"

Wenn das ein Fehler war, ignorieren Sie einfach diese e-mail und nichts passieren wird.[/lang]

2) Why did username not get replaced with the actual username?

Thanks.