For those interested in the details of how one kernel developer works: Greg
Kroah-Hartman has documented
his email workflow in great detail. “The ability to edit a
single message directly within my email client is essential. I end up
having to fix up changelog text, editing the subject line to be correct,
fixing the mail headers to not do foolish things with text formats, and in
some cases, editing the patch itself for when it is corrupted or needs to
be fixed (I want a Linkedin skill badge for ‘can edit diff files by hand
and have them still work’)“

Source: LWN.net – Kroah-Hartman: Patch Workflow With Mutt – 2019