Metis Mail
by Metis Mail
What Metis Mail is
Metis Mail is an open-source email client that brings Gmail, Microsoft 365, and Zoho Mail accounts into one inbox. Folders, message threads, search, attachments, and read states stay synchronized across connected accounts. Its AI agent can search and read messages, summarize threads, draft replies in your voice, and sort mail. It asks before sending or deleting messages. The client also labels messages with a phishing verdict, risk score, and reasons for the flag before you read them. Inbox tools include snoozing, scheduled sending, undo-send, autosaved drafts, muted threads, a command palette, and keyboard shortcuts. You can connect a supported AI provider and choose a model for the agent. Metis Mail runs on the web, including modern mobile browsers, and can be self-hosted. The maker says mail remains with its provider and mailbox access is revoked when disconnected. Sign-in supports a password or magic link, and TOTP two-factor authentication is required before mailbox access. The open-source plan is free forever. Cloud Pro costs $12 a month, and Workspace costs $20 a month; annual options cost $115 a year and $192 a year, respectively.
Who it suits
Metis Mail suits people who want to manage Gmail, Microsoft 365, or Zoho Mail accounts in a unified browser inbox, as well as teams needing shared mailboxes and team rules. It also fits users who want an AI agent for message summaries, drafts, and triage, with approval required before sending or deleting.
What it does well
- Combines Gmail, Microsoft 365, and Zoho Mail accounts in one inbox.
- Keeps folders, threads, attachments, and read states synchronized.
- AI agent summarizes threads, drafts replies, and triages messages.
- Phishing verdicts include a risk score and reasons.
- Free plan includes every feature, unlimited workspaces, and mailboxes.
What to know first
- Cloud Pro allows up to three connected mailboxes.
- Native iOS and Android apps are on the roadmap.
- Workspace costs $20 a month.
Limits
The free Open source plan is free forever and includes every feature and unlimited workspaces and mailboxes. Cloud Pro is limited to three connected mailboxes; Workspace is $20 a month and adds shared mailboxes, team rules, role-based administration, and priority support, with SSO available on request.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Open source | forever · Every feature including agent · unlimited workspaces and mailboxes · community support on GitHub · self-hosted | Free |
| Cloud Pro | per user/month · Up to 3 connected mailboxes · inbox agent · smart replies · summaries · phishing analysis | $12 a month |
| Workspace | per user/month · Everything in Cloud Pro · shared mailboxes · team rules · role-based administration · priority support · SSO on request | $20 a month |
| Cloud Pro annual | per user/year · Up to 3 connected mailboxes · inbox agent · smart replies · summaries · phishing analysis | $115 a year |
| Cloud Pro (annual) | Annual; page says save 20% · Up to 3 connected mailboxes · Inbox agent, smart replies, summaries · Phishing analysis on every message | $115 a year |
| Workspace annual | per user/year · Everything in Cloud Pro · shared mailboxes · team rules · role-based administration · priority support · SSO on request | $192 a year |
| Workspace (annual) | Annual; page says save 20% · Shared mailboxes and team rules · Role-based workspace admin · Priority support; SSO on request | $192 a year |
| Enterprise | On-premises deployments · SLAs · custom authentication · commercial licensing | On request |
As trymetis.email lists them, read 15 Oct 2026. The maker's own page has the final word.
Getting started
- Open the Metis Mail website in a browser or choose the self-hosted option.
- Choose the Open source, Cloud Pro, Workspace, or Enterprise plan.
- Sign in with a password or magic link.
- Complete TOTP two-factor authentication before connecting a mailbox.
- Connect a Gmail, Microsoft 365, or Zoho Mail account.
- For the agent, connect a supported AI provider and choose a model.
Verdict
Choose Metis Mail if you want a unified inbox with an AI agent, phishing analysis, and a free forever open-source plan. Teams that need shared mailboxes, team rules, or priority support can choose Workspace; people who need native iOS or Android apps may want to wait for those apps to arrive.
Questions
Is Metis Mail free?
Yes. The Open source plan is free forever and includes every feature, unlimited workspaces, and mailboxes.
How much do the paid plans cost?
Cloud Pro costs $12 a month or $115 a year. Workspace costs $20 a month or $192 a year.
Which email providers can I connect?
Metis Mail connects Gmail, Microsoft 365, and Zoho Mail accounts.
Which platforms does it support?
Metis Mail is a web client, works in modern mobile browsers, and can be self-hosted. Native iOS and Android apps are on the roadmap.
Is Metis Mail open source?
Yes. Its Open source plan is free forever and includes every feature.
What does Workspace include?
Workspace includes shared mailboxes, team rules, role-based workspace administration, and priority support. SSO is available on request.
Facts from Metis Mail's own pages
- AI agent
- The agent can read and search messages, summarize threads, draft replies in the user's voice, and triage mail; it asks before deleting or sending anything. · trymetis.email, 7 Oct 2026
- AI data sharing
- When AI features are used, relevant message content is sent through OpenRouter to generate the response and is stated not to be used for generalized model training. · trymetis.email, 15 Oct 2026
- AI model choice
- Metis says users can connect a supported AI provider and choose the model used by the agent. · trymetis.email, 15 Oct 2026
- AI models
- Metis Mail is model-agnostic and lets users connect a supported AI provider and choose the model for the agent. · trymetis.email, 7 Oct 2026
- API and extensibility
- The privacy policy covers associated APIs and says optional MCP and agent-to-agent integrations let authorized external AI clients access permitted mail tools. · trymetis.email, 15 Oct 2026
- App coverage
- web · trymetis.email, 23 Sept 2026
- Availability
- Metis Mail is a web client that works in modern mobile browsers; native iOS and Android apps are described as on the roadmap. · trymetis.email, 7 Oct 2026
- Company founded
- LinkedIn lists AstraQ Cyber Defence as founded in 2025. · linkedin.com, 15 Oct 2026
- Company headquarters
- AstraQ lists Akola, Maharashtra, India as its registered location and headquarters. · astraqcyberdefence.com, 15 Oct 2026
- Company legal name
- The operating company is ASTRAQ CYBER DEFENCE PRIVATE LIMITED, CIN U62090PN2025PTC244094. · astraqcyberdefence.com, 15 Oct 2026
- Company size
- LinkedIn places AstraQ Cyber Defence in the 2–10 employee size band and shows four employees. · linkedin.com, 15 Oct 2026
- Company type
- LinkedIn identifies AstraQ Cyber Defence as privately held and operating in data-security software products. · linkedin.com, 15 Oct 2026
- Account limit
- 3 · trymetis.email, 23 Sept 2026
- Developer documentation
- The site links to GitHub documentation, issue tracking, discussions, a roadmap, releases, and security-disclosure resources, but the linked repository returned 404 during this research. · trymetis.email, 15 Oct 2026
- Enterprise licensing
- The maker says hosted or embedded services that compete with its paid offering require a commercial license. · trymetis.email, 7 Oct 2026
- Founder
- Raj Pundkar identifies himself as AstraQ Cyber Defence's founder and describes Metis Mail as one of its products. · rajpundkar.com, 15 Oct 2026
- Free plan
- Yes · trymetis.email, 23 Sept 2026
- Headquarters
- Akola, Maharashtra, India · trymetis.email, 28 Sept 2026
- Hosted beta
- The maker says the hosted version is free while in beta. · trymetis.email, 7 Oct 2026
- Inbox agent
- The adjacent chat agent can search and read messages, summarize threads, triage mail, classify messages, and answer inbox questions. · trymetis.email, 15 Oct 2026
- Keyboard controls
- Keyboard shortcuts cover folder navigation, composing, replying, starring, archiving, searching, and command-palette access. · trymetis.email, 15 Oct 2026
- Licence
- The founder describes the code as Business Source License 1.1, with each published version converting to MIT four years after release. · rajpundkar.com, 15 Oct 2026
- Limit: AI dependency
- AI features may transmit relevant message content to OpenRouter and phishing analysis is handled by a separate AstraQ service. · trymetis.email, 15 Oct 2026
- Limit: Cloud Pro mailbox cap
- Cloud Pro is limited to three connected mailboxes, whereas the self-hosted plan lists unlimited mailboxes. · trymetis.email, 15 Oct 2026
Where Metis Mail stands on Freedom251
- Email clients#2 of 142
- AI Email Assistants#1 of 46