Folder Suggest

Stop filing emails by hand. Folder Suggest picks the right folder for you — instantly, privately, with zero setup.

Open any email, click Suggest Folder, and the add-in ranks your existing folders by how well they match the content, sender, and subject. Pick one, move, done. Wrong pick? Undo is one click away.

Unlike rules-based tools, there's nothing to configure. Unlike cloud AI assistants, nothing leaves your device.

Who it's for

• Professionals who file dozens of emails a day across many folders
• Legal, finance, healthcare, and consulting teams with strict data-handling requirements
• Anyone who's tried Outlook Rules, given up, and gone back to drag-and-drop

How it's different

• No rules to write. Reads your existing folder structure and learns from it immediately.
• Semantic matching. Understands that a Stripe payout belongs in Accounting and a calendar invite from a client belongs in their project folder — even without matching keywords.
• Fully on-device. A ~23 MB AI model runs inside Outlook's browser sandbox. Email content, folder names, and filing history never leave your machine. No third-party AI service. No telemetry.
• Instant after first run. Folder profiles cached locally — suggestions appear in under a second.

Features

• Pinnable task pane (Outlook classic) that auto-refreshes as you switch emails
• Keyboard shortcuts: ↑/↓ to navigate, Enter to move, Esc to close
• Automatic dark mode
• One-click undo on every move
• Works with nested folder hierarchies out of the box

Requirements

• Microsoft 365 or Exchange Online account. Personal Outlook.com, Hotmail, and on-premises Exchange are not supported.
• Outlook on Windows (classic or new) or Outlook on the web
• Internet connection on first use to download the AI model (cached permanently after)

Install free, try it on your next email, and see if it picks the right folder.