Reply Zero labels every email that needs a reply asDocumentation Index
Fetch the complete documentation index at: https://docs.getinboxzero.com/llms.txt
Use this file to discover all available pages before exploring further.
To Reply, and every email where you’re waiting for a reply as Awaiting Reply. These labels appear in your regular email client (Gmail or Outlook). Gmail users can also use the Reply Zero view in Inbox Zero to see only these emails.

Getting Started
Go to the Reply Zero tab in the left sidebar to enable it.How It Works
To Reply
Our AI analyzes incoming emails and labels the ones that need your response asTo Reply. They appear in both your email client and the Reply Zero view.
Awaiting Reply
When you send an email that needs a response, Reply Zero labels the thread asAwaiting Reply and adds it to your Waiting list so you can track overdue responses.
One-click Follow-ups
Use theNudge button to have AI draft a follow-up message. Filter by age to prioritize overdue conversations.
Managing Your Lists
- Mark as Done — Click
Mark Doneto move a conversation to theDonetab - Filter by Age — Filter for emails waiting more than a week to focus on overdue threads