mutt and vim

["Wilkinson, Alex" <alex.wilkinson@xxxxxxxxxxxxxxxxxxx>]

Hi all,

My default editor when using Mutt 1.5.6i is vim.

Question: Is it possible to configure vim to be only 80 characters
          wide *only* when mutt exec's it ?

The reason being, to avoid overly long lines that do not wrap correctly.

Regards

 - Alex