Mutt
From charlesreid1
Installing
Prereqs
If you want Gpg integrated into Mutt, you have to install Gpg first. It is a bit of a pain in the arse to install from source due to 5 dependencies, but you can get a binary or install it via Fink. Then you have to install Gpgme, which is, I guess, an interface to GPG that Mutt can use.
To install either of those, see the respective articles.
Configure
With GPG
To configure mutt with GPG from source:
#!/bin/sh
./configure \
--prefix=${HOME}/pkg/mutt/1.5.21 \
\
--enable-gpgme \
--with-gpgme-prefix=${HOME}/pkg/gpgme/std \
--disable-pgp \
\
--enable-pop \
--enable-imap \
--enable-smtp \
Without GPG
To configure mutt without GPG:
#!/bin/sh
./configure \
--prefix=${HOME}/pkg/mutt/1.5.21 \
\
--enable-pop \
--enable-imap \
--enable-smtp \
Adding Yourself to Mail Group
I had to add myself to the mail group, too. To do this on a mac:
sudo dseditgroup -o edit -a username -t user mail