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Fast AI-powered email client
Home / AI Email Assistants / Zero
Zero
Open-source AI email client
Quick facts
| Category | AI Email Assistants |
|---|---|
| Official website | 0.email |
| Listed on allAilists | Added November 2026 |
| Alternatives on this site | 22 in AI Email Assistants |
What Zero is for
Zero is one of 23 tools in our AI Email Assistants list. Open-source AI email client.
Email assistants triage your inbox, draft replies and summarize long threads. Some are complete email clients while others plug into Gmail or Outlook, which matters if you do not want to switch apps.
What to check before choosing Zero
- Reply drafts that actually sound like you after some use.
- Support for your email provider, shared inboxes and mobile.
- What access the app needs, and how message data is stored.
These tools read sensitive mail. Check the security documentation and your company's policy first, and keep reviewing drafts instead of allowing automatic sends.
Zero alternatives
Other AI Email Assistants worth comparing with Zero:
Shortwave
AI-first Gmail client with agents
Spark Mail
Smart email app with AI writing
Fyxer AI
AI assistant that drafts replies and organizes your inbox
Jace
AI email agent that drafts replies and organizes your inbox
Missive
Team inbox with AI writing and rules
SaneBox
AI email filtering and cleanup
Canary Mail
Secure email app with AI copilot
See all 23 AI Email Assistants →
Frequently asked questions
What is Zero?
Zero is listed in our AI Email Assistants directory. In short: Open-source AI email client. The official website is 0.email.
What are the best alternatives to Zero?
Popular alternatives in the same category include Superhuman, Shortwave, Spark Mail, Fyxer AI and Jace. See all 23 AI Email Assistants to compare more options.
Is Zero free?
allAilists does not track prices, because AI plans change often. Check the pricing page on 0.email for current free plans, trials and limits before you sign up.
Is Zero safe to use for work?
Before using any AI tool for client or company work, read its privacy policy and terms, check whether your data is used for training, and confirm who owns the output. These tools read sensitive mail. Check the security documentation and your company's policy first, and keep reviewing drafts instead of allowing automatic sends.
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