The tone of an email decides whether it gets a warm reply, an annoyed one, or none at all — and writers are notoriously bad at judging their own. A request you meant as friendly can read as demanding; a careful, polite note can hedge so heavily the actual ask disappears. This checker analyses your draft in the browser across four dimensions and flags the specific phrases pulling your tone off target, so you can fix them before you hit send.
How it works
You paste your draft and pick the intended tone (friendly, neutral-professional, or firm). The checker scores the text on four axes using transparent linguistic signals. Warmth rises with greetings, gratitude, and personal words and falls with curt phrasing. Assertiveness rises with direct requests and falls with hedging like “just,” “maybe,” and “if possible.” Clarity rewards short sentences and clear asks and penalises walls of text. Politeness tracks softeners and courtesy markers against demanding language and exclamation overload. It then flags individual phrases — over-hedging, accidental bluntness, run-on sentences — and offers concrete rewrites. All of this runs locally; the email is never uploaded or stored.
Tips and examples
Set the intended tone honestly: a firm escalation should score high on assertiveness and lower on hedging, while a thank-you note should lean warm. Watch the gap between politeness and assertiveness — many drafts are polite but so hedged that the recipient cannot tell what you actually want; trim the softeners around the one sentence that carries your request. If clarity scores low, the usual culprit is a single 40-word sentence; split it. Use the checker as a fast first pass, then paste the email into an LLM only when you want a full nuanced rewrite — most drafts just need the two or three flagged phrases fixed.