AI-powered inbox chat
Chat with your inbox to ask questions and work through messages in a conversational way.
Zero
ClaimZero is an AI-powered open source email client for busy professionals, with chat, summaries, labeling and AI-assisted replies.
Overview
Zero is an AI-powered open source email client that helps people manage their inboxes with less manual sorting and writing. The site describes it as a product for busy professionals who want to prioritize important messages, summarize conversations, complete tasks, and chat with their inbox.
The pricing and about pages show a product line with a Free tier, a Pro subscription, and an Enterprise plan. Zero also says its codebase is open source and can be reviewed, contributed to, and self-hosted, which makes transparency part of the product’s positioning.
Features
Email labeling
Automatically organize messages with basic labeling on the Free plan and auto labeling on Pro and Enterprise.
AI email writing
Draft and send responses with limited AI writing on Free and one-click AI writing and replies on Pro and Enterprise.
Thread summaries
Generate instant summaries of threads to review conversations without reading every message in full.
Email connections
Manage multiple inboxes with one email connection on Free and unlimited email connections on Pro and Enterprise.
Support options
Access higher-touch support on paid plans, including a dedicated Slack channel for Enterprise.
Use cases
Inbox triage
Use Zero to clear a crowded inbox by summarizing long threads, labeling messages, and focusing on the items that need action now.
Reply drafting
Use the chat interface and AI writing tools to draft responses faster when you need to reply to routine or repetitive messages.
Managing several accounts
Use Zero as a workspace for staying on top of multiple inboxes, with unlimited email connections on paid plans for heavier workflows.
Open source adoption
Use the open source model when code review, self-hosting, or community contribution matters to your organization.
Team support
Use Enterprise when a team wants priority support and a dedicated Slack channel alongside advanced inbox automation.
Pros and Cons
Pros
- Open source codebase with stated options to review, contribute, and self-host.
- AI-assisted inbox management, including chat, summaries, labeling, and reply drafting.
- Clear plan structure with Free, Pro, and Enterprise tiers.
- Pro and Enterprise plans add unlimited connections and more advanced AI workflows.
Cons
- The source does not provide detailed information about supported email providers or integrations.
- Pricing and support details are only partially described on the public pages.
FAQ
What is Zero?
Zero is an AI-powered email client that manages your inbox, letting you chat with your inbox, summarize conversations, and draft responses.
Does Zero offer a free plan or trial?
The source does not describe detailed setup steps, but it does show a pricing page with a Free plan, a Pro plan with a 7-day trial, and an Enterprise option.
Is Zero open source?
Zero describes itself as open source and says its codebase can be reviewed for security and privacy, contributed to, and self-hosted.
Who is Zero for?
Zero positions itself for busy professionals and power users who want to unclutter their inboxes, prioritize messages, and process email faster.
Quick Facts
- Category
- AI email client
- Product type
- Open source
- Primary users
- Busy professionals, power users, and teams
- Website
- 0.email
- Pricing
- Free, Pro, and Enterprise plans
- Notable workflow
- Chat with your inbox, summarize threads, and draft replies
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