I used this link to setup mutt but I am confused about which folder does this file belongs to.


http://www.gadgetxplorer.com/2010/08...-mac-os-x.html
It created the file muttrc with the provided settings but

when I am open mutt, I get the following message

/var/mail/codename: No such file or directory (errno = 2)

You are going to need to understand how to navigate to folders and create folders using commands in Terminal in order to configure Mutt.
See the Unix FAQ referred to above.

I was finally able to run mutt to access gmail using the instructions on that website.
I found that .muttrc file was at /users/codename/.muttrc and changed that file as instructed. To edit the file, I had to unhide the hidden files using this command -
defaults write com.apple.finder AppleShowAllFiles -bool true

This command allowed me to view that .muttrc file so I could edit it with Textedit app. I am still learning my ways to use mutt so overall still work in progress but thanks for all the help so far.

As explained in the Unix FAQ referred to above, it is better to use other text editors (e.g. TextWrangler) for config files. And these other text editors have no problem in opening "hidden" files.