Your voice can stay recognizable while the situation changes. You may explain more to a new client, make a request immediately to a colleague or set a warm but firm boundary with a friend. Separate the writing habits you want to preserve from choices about familiarity, background and directness. We’ll use genuine emails to propose that guidance, save only what you approve and test it on new requests. A router skill can help select among distinct methods when you have several; a single conditional guide may be enough. You keep the meaning and the business decisions behind the message.

Begin with a few Sent emails that show writing you want to use again. An explanation to a new client and coordination with a colleague offer different situations to compare. Work and personal messages can also be useful if that distinction matters to you. A sent message is evidence of what you wrote; you choose whether it still represents how you want to write.

In Claude or Codex, ask for candidate messages with their recipients, dates and purposes so you can select or replace them. The assistant should analyze your own prose, leaving out quoted replies, signatures and other authors' words. If Gmail is unavailable, paste selected excerpts yourself. You are choosing examples for writing guidance, so leave out private details the assistant does not need for that purpose.