[gjjrfcbugxbhf]

No. The way to write your emails in vim is to use an email client that lets you open the text in an editor of your choice. E.g. mutt, or a webclient combined with an add on that let's your open textarea in an external editor (vimperator or its all text).

P.s. emacs sounds like a great OS - are there any add ons that allow one to open its textareas in a decent editor? :p