Cover letter

Hi all, I'm going to experiment the git-send-email command quite soon and I have a doubt that I would like to clarify.

I'm used to the following work flow:
- git branch trivial
- git checkout trivial
- work work work
- git gui to commit all the changes
- git-format-patch -n -o /home/paolo/patches
- open the MUA
- write the cover letter
- import the N patches
- send all the patches
- collect feedback
- work work work
- git rebase -i
- back to the git gui to commit all the changes line

This is working fine but since I'm going to push out a queue of patches it would be nicer to script everything with git-send-email.

I know I have to configure git in order to use the gmail's smtp server, I know how to tell git-send-email where to pick up the patches but I fail to understand how I can write a cover letter and let it be part of the patch queue.

Any hint?

Thanks in advance.