Lots of questions today.

Is it possible to edit a message in an external editor?
Right now I am editing with vim inside the same terminal window, but for some drafts, I would like to be able to pop out the vim window. These are drafts that I usually edit all week long and send at the end of the week. I know I could just make a draft and it could stay open in a buffer, but I need to have it standing in a desktop by itself, otherwise I just forget to write it...

Cheers,

Guillaume