Epistles
Draft, then localize
Reason in your strong language; deliver in the reader's, sized for their screen and their culture.
When your message must land in a language or culture that is not your strongest, split the work: reason in the language where you think best, then have the machine deliver in the reader's, sized and shaped for how they will actually receive it. Translation is the smallest part of the job. Register, formality, idiom, and what goes unsaid differ by culture, and the machine, briefed, handles all four better than a dictionary ever did.
Deliverability is physical too. A message read on a phone in a queue is not a document; it is a screen and a half, at most. Specify the channel and the reader's situation, and let both shape the artifact: the phone-sized summary for the spouse, the formally polite note for the official, the properly indirect draft for the culture where directness costs you. The content survives the translation; the effect comes from the fit.
How to practice it
Think in yours, deliver in theirs.
Work out the content in your strongest language. The reader's version is a deliverable, produced deliberately.
Brief the culture, not just the language.
Formality, directness, what to leave implicit: name the register you need, or inherit the machine's default one.
Size to the screen.
Say where it will be read. A phone in a hallway holds three sentences; write for the actual glass.
Round-trip the meaning.
For messages that matter, have the delivered version translated back cold. What drifted in the round trip drifts in the reader too.