The email you'd write, if you had the time.
thread. reads the email in front of you, drafts a reply in your voice, and inserts it into Gmail or Outlook with one click.
Free · Uses your own OpenAI API key · No data leaves your browser except to OpenAI
A floating AI assistant that lives in Gmail and Outlook. Reads your threads. Writes like you do. Inserts drafts with a single click.
Open any email. thread. reads the full thread — every message, every reply — and drafts based on what was actually said. No copy-pasting, no re-explaining.
Paste 3–5 of your past emails once. After that, every draft matches your rhythm, vocabulary, and opening/closing patterns. No more generic AI slop.
"Reply & insert" opens the reply box itself, places the draft above your signature, and positions your cursor. You review, you send.
Quick replies, follow-ups, tough conversations, cold outreach, meeting recaps, three-variant drafts. Each tuned for the job.
Drafts appear word-by-word as they're generated. No loading spinner. See the tone and direction immediately.
One-click install. No account needed. thread. lives in the bottom-right corner of Gmail and Outlook.
You pay OpenAI directly for the AI. No subscription from us. Typically a few cents per day for heavy email users.
Open an email, click the thread. pill, type one sentence about what you want to say. Review the draft, click Reply & insert, send.
thread. has no server. We built it as a browser extension that connects your inbox directly to OpenAI's API. Your emails go from your browser to OpenAI and back. We never see them.
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