I notice that when using the spellchecker in Mail it uses Us English i.e. 'color'instead of 'colour' the language setting says 'English' and my Word Language is English U K Can I change the Mail spellchecker?
I hadn't noticed on my system that the spell checker was English (US) but you're absolutely right. As this Vista forum shows, Mail only provides the US version, and they suggest using a different email client if you want UK. Not a helpful solution