Mutt - wrap Text related Question. PLS help me

Friends,

Recently I have observed that, all my messages (sent from mutt client)
having the 'Unwrap Text' enabled which changes the email message
format in the recipients' email client like MS Outlook.

ie, I could see that, the outlook Format->Unwrap Text is getting
enabled (tick mark) in their clients.

The actual impact is that, becoz of the vim settings like
'textwidth=80', mail messages are getting wrapped to 80 chars.. I like
this too .

The question is, Is there any muttrc settings which will automatically
'disable the Unwrap Text' for the recipients email client .

bash-2.05b$ cat ~/.muttrc | grep wrap
91:unset markers # put a '+' at the beginning of wrapped
lines.
117: set smart_wrap=yes # wrap long lines at word boundary.
130: set wrap_search # Wrap search to top/bottom.

Looking forward for your kind help,
Pons.