Git has a set of commands that can either provide ready to be sent email messages as files (if you have a proper client, not the web ones), or send the formatted email for you. Most good clients have a way to directly pipe messages to the shell, so you can execute git directly from there to apply the change. Quite streamlined once you've got everything setup (not that difficult) [0].

But it does requires people to be disciplined with their changes (no wip commits). This may require learning about the flags for `git rebase` and `git commit`.

[0]: https://git-send-email.io/