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Your name and address fill new letters. API keys never leave this browser except when you hit “Use my API key,” and they are not stored on the server.

Requester defaults

Full nameEmailMailing addressPhone

Your own AI model (optional)

OpenAI, xAI, Anthropic, or any OpenAI-compatible endpoint. Built-in Grok is a separate button on the draft, and it needs a signed-in account. Paste an API key here to call your own LLM model.

ProviderAI model name (optional)The LLM model id your provider expects, for example gpt-4.1 or grok-4.5. Leave blank for a default.API keyStored only in this browser’s local storage.