Replying to email is mostly deciding on a tone, then finding the words. This tool does both — it reads the email you paste and returns three reply options at once, one formal, one neutral, and one friendly, each with its own subject line, using your own OpenAI or Anthropic key entirely in your browser.
How it works
Choose a provider and model, paste your API key, drop in the incoming email, and optionally add your context (your role, relevant history) and the outcome you want. The tool builds a prompt that requests exactly three replies across the three tones and asks the model to return strict JSON — tone, subject, and body per reply. The response is parsed and shape-checked in the browser before display. It is one direct request to the provider.
For Anthropic, the request includes the official direct-browser-access header so it works straight from the page.
Steering the output
- Your context — “I am the project lead and the deadline already moved once.”
- Desired outcome — “Politely decline but keep the door open,” or “Confirm and propose Tuesday.”
The more you give the model, the less generic the drafts.
Tips
- Copy a draft, then trim it — AI replies tend to over-explain; one good cut sharpens them.
- Mix tones: take the structure of the neutral reply and the warm sign-off of the friendly one.
- Always proof anything that commits you to a date, price, or promise before hitting send.