About Chiefy

Chiefy is an AI email assistant for Gmail and Outlook. It sorts incoming mail with Auto Labels, drafts replies in your voice with Smart Drafts, summarizes long threads, and answers questions about your email and calendar with Ask Chiefy.

Formerly Duet Mail

Chiefy was called Duet Mail until July 2026. It is the same product, run by the same team, and your account carries over. Old Duet Mail links and bookmarks now open chiefy.com.

Who makes Chiefy

Chiefy is built by Duet Mail LLC, an independent software company. You can reach us at hello@chiefy.com.

Where to use it

• The Chiefy extension for Gmail in the Chrome Web Store
• The web app at app.chiefy.com, for Gmail and Outlook

Privacy and security

Chiefy connects to your mailbox with Google or Microsoft sign-in, encrypts email content at rest, and completes Google’s annual CASA security assessment. Read the privacy policy and the privacy and security help articles.