Rewrites stay in the language you wrote them in
- A German email no longer signs off in English. A note ending "vielen dank, pedro" was
coming back signed "Kind regards", about one run in two. The prompt carried four English
closings and a sentence underneath explaining that they were for English drafts only. Four
concrete words beat one abstract correction, every time. They are now simply absent unless
you are writing in English — the model cannot reach for a closing it was never
shown.
- Your own closing survives, whatever the register. "gracias" was becoming
"Atentamente", "dziękuję" was becoming "Pozdrawiam". Choosing a more ceremonious
sign-off on your behalf is a correction nobody asked for, so the rule that reuses the one you
wrote now outranks the rule that adds one, and adding is switched off entirely for a draft
that already has a closing.
- No name gets added to an email that never had one. A two-sentence note came back with
a signature under it, turning a quick message into a signed letter. Short emails are no
longer told who you are, so there is no name available to append.
- Casual "please" stays casual. A Spanish message lost its "porfa" and came back reading
like an order. Cutting the run-up to a request is the job; the polite word attached to the
request is the register, and it stays — in your language, in whatever clipped form you
typed it.
Measured across 34 drafts in 26 languages, three runs each, judged by Claude Sonnet: 88.9% to
98.5%, with run-to-run variance down from 5.6 points to 2.9. The same draft now comes back the same
way twice.