How to send the [PATCH 0/x] kind of emails?

[Greg KH]

On Fri, Dec 12, 2014 at 02:05:50PM -0800, Mandeep Sandhu wrote:
> How does one send this kind of summary email? Is it generated manually
> or through some git format-patch/send-email foo magic?
> 
> I have 4 patches that I have to submit. I'd like to send a summary
> email (0/4) explaining the changes.

git send-email --compose