git-email
integrates git and email with Emacs, it offers two main
functions for sending email with git.
git-email-send-email
will send the marked files as patches using your
mail client of choice. This means that you have to first run
git format-patch
to generate the patches.
git-email-format-patch
will ask you for a base revision and generate
patches for all the changes that occured between the revision and
the current HEAD. It will then prepare the patches as email
messages in the same way as git-email-send-email
.
If you want to easily apply patches you have recieved via email, you should checkout piem.
See the manual for more details.
You can send patches and bug reports to the git-email-devel mailing list.