This is a sample mutt configuration which resembles the setup I currently use.
It's really basic, and just provides some basic setup, but I feel like it's a good starting point for a more complex mutt configuration.
I blogged about this setup here and some of the steps I took. I tried to make the repository resemble the iterative process my muttrc went through while creating it, but really, there's not much else to this other than personal tweaks.
This is not meant to be an "oh-my-mutt" type of setup, though that would be really neat to have, and I might do something like that at some point. This is only meant to provide a basic starting point for a new mutt user to not get too overwhelmed when setting up their first muttrc.
The Solarized mutt theme is being pulled in as a submodule. It's probably out of date. Feel free to update it.