the value of GIT_AUTHOR_IDENT, or GIT_COMMITTER_IDENT if that is not
set, as returned by "git var -l".
+--reply-to=<address>::
+ Specify the address where replies from recipients should go to.
+ Use this if replies to messages should go to another address than what
+ is specified with the --from parameter.
+
--in-reply-to=<identifier>::
Make the first mail (or all the mails with `--no-thread`) appear as a
reply to the given Message-Id, which avoids breaking threads to