🚀 go-pugleaf

I just switch from vi to emacs and I have two questions:
 
1. I use vi commmand  :r @ in repl to copy all my recieving message into
new repl message but I tried to do samething with emacs in either emacs
or vip mode but this looks for /usr/spool/mail which is already empty
and this should look for inbox message (I guess).   emacs is very
sensitive on unix csh environment.  I am running Ultrix v3.0 and I don't
know what version of mh.   I would like to know how can I quote all
recieving message into emacs editor.
 
2. How can I get ">" on left side of all recieving message into repl
editor so I can quote this recieving message more clear?
 
for example:
 
> I am using mh mailer...
I like this mailer.
 
 
I don't have good doc on mh and I would like to get more information on
mh.
 
Thank you..
 
Willy
 
p.s. it would be nice to add signature under my name and my company does
not use usenet signature at all.