It sounds like you — to that person.
Ember learns not just your voice, but how you write to each contact: the language, the greeting, the sign-off. A reply to Hans reads like you wrote it to Hans.
Ember learns how you write to each person from your sent mail.
It matches their language, your greeting, and your sign-off.
Regenerate or tweak, then send.
A voice profile per contact
Most tools learn one generic “professional” voice. Ember learns how you write to each person from your actual sent mail — the register, the greeting, the sign-off — because how you write to a board member and how you write to a friend-of-a-friend are different voices, and both are yours.
In their language
If you write to Hans in Dutch, the draft comes back in Dutch. The reply matches the language and tone you already use with that specific person, not a translation-app approximation.
You stay the sender
Every draft is exactly that — a draft. Regenerate it, edit it, or send it as-is; nothing ever goes out without you. The point is to remove the typing, not the judgement.