Is the Po6 Mailbox MCP server down?

mcp-registry/com.po6/mailbox · v1.0.0

up · requires sign-in
Last checked 2026-10-23 04:28 UTC · handshake 270ms

As of 2026-10-23 04:28 UTC, the Po6 Mailbox MCP server is up (it requires sign-in) with a Glimind reliability score of 84/100 (grade B). Over the last 30 days it answered 100% of Glimind's liveness checks.

uptime (30d checks)
100%
checks observed
123
outages (90d)
0
tools
39

Give AI agents secure access to your email via private aliases with dedicated mailbox storage.

Install Po6 Mailbox MCP server

Add to Cursor Add to VS Code

Claude Code

claude mcp add --transport http po6-mailbox-mcp-server https://mcp.po6.com

Claude Desktop · Windsurf · Cline (mcpServers JSON)

{
  "mcpServers": {
    "po6-mailbox-mcp-server": {
      "type": "http",
      "url": "https://mcp.po6.com"
    }
  }
}

Third-party server, listed as discovered. Review its source before installing.

Agent-readiness: A (96/100)

A (96/100): 0 error(s), 0 warning(s) across 39 tool(s); ~5,883 tokens of tool definitions.
Scores higher than 85% of 15,586 MCP servers Glimind has audited.
Its tool list costs an agent ~5,883 tokens per session — more than 60% of servers.
94 → 96 since 2026-10-17
no tool-poisoning patterns
Schemas100
Descriptions100
Safety hints100
Token cost100
Client compatibility70
Protocol100
Reliability100
Stability100

What to fix (2)

No tool declares an outputSchema.

Declare outputSchema and return structuredContent (MCP 2025-06-18+). Agents can then parse results without guessing, and chain tools reliably. How to fix →

Requires authentication (Bearer); tool definitions could not be read anonymously.

If discovery should be public, allow initialize + tools/list without credentials and gate only tools/call. Directories and routers can then list your tools.

Get alerted

Get an email or webhook when this server's readiness drops by 10+ points, tool-poisoning text appears, or a tool breaks:

curl -X POST https://glimind.com/v1/subscriptions -H 'content-type: application/json' -d '{"tools":["mcp-registry/com.po6/mailbox"],"email":"[email protected]"}'

Agents: watch_tool({"toolId": "mcp-registry/com.po6/mailbox"}) over MCP.

Passed

Largest tool definitions

Static checks of the advertised tools/list (schema, descriptions, annotations, tool-poisoning patterns, names, size) plus observed protocol, uptime, latency and contract changes. Read-only: no tool is ever called. Weights: schema 15, docs 20, safety 15, efficiency 15, compatibility 15, protocol 5, reliability 10, stability 5. Token counts are estimates (~3.6 characters per token).

Operator? Fix these, then re-check live. Embed the readiness badge:

Markdown 
[![MCP agent-readiness](https://glimind.com/v1/readiness/badge/mcp-registry%2Fcom.po6%2Fmailbox.svg)](https://glimind.com/server/mcp-registry%2Fcom.po6%2Fmailbox?ref=badge)
HTML 
<a href="https://glimind.com/server/mcp-registry%2Fcom.po6%2Fmailbox?ref=badge"><img src="https://glimind.com/v1/readiness/badge/mcp-registry%2Fcom.po6%2Fmailbox.svg" alt="MCP agent-readiness"></a>
reStructuredText 
.. image:: https://glimind.com/v1/readiness/badge/mcp-registry%2Fcom.po6%2Fmailbox.svg
   :target: https://glimind.com/server/mcp-registry%2Fcom.po6%2Fmailbox?ref=badge
   :alt: MCP agent-readiness

Tool-definition log

Glimind records every version of this server's tool definitions in a signed, append-only transparency log. Current manifest sha256:9147ecc7f9cb801e…, first seen 2026-10-17, included at leaf 12546 of 50,101. Version history · verify what your client received.

Tools (39)

Compare: most reliable web servers · most reliable email servers · most reliable files servers · most reliable analytics servers · most reliable data servers

Know before your agent calls it

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Add Glimind — free, no signup:

Add to Cursor Add to VS Code

Claude Code

claude mcp add --transport http glimind https://glimind.com/mcp

Claude Desktop · Windsurf · Cline (mcpServers JSON)

{
  "mcpServers": {
    "glimind": {
      "type": "http",
      "url": "https://glimind.com/mcp"
    }
  }
}

FAQ

Is the Po6 Mailbox MCP server down right now?

As of 2026-10-23 04:28 UTC, the Po6 Mailbox MCP server is up (it requires sign-in) with a Glimind reliability score of 84/100 (grade B). Over the last 30 days it answered 100% of Glimind's liveness checks.

How many tools does Po6 Mailbox MCP server provide?

Po6 Mailbox MCP server advertises 39 tools, including archive_landing_page, assign_landing_page_domain, compose_email, create_draft, create_landing_page.

How do I install Po6 Mailbox MCP server?

Point your MCP client at this streamable-http endpoint: https://mcp.po6.com

Is the Po6 Mailbox MCP server safe to connect to an AI agent?

Glimind scanned all 39 tool definitions for tool-poisoning patterns — hidden or invisible characters, instructions that override the model, concealment from the user, requests to read credential or MCP config files, conversation exfiltration and cross-tool shadowing — and found none. This checks what the server tells the model, not what its code does; review the source before granting access to sensitive data.

Operator of Po6 Mailbox MCP server?

Status page: 90-day uptime, every outage and how long it lasted.

Claim this listing to get the Verified operator marker, a remediation checklist and owner analytics, or embed the live badge from any of the tool pages above. Maintainers: alerts, deploy attestation and monthly reports.

Status is an automated estimate from Glimind's liveness checks (handshake and tool listing only; no tool is ever called) and may lag or differ from your network. Glimind is not affiliated with this server or its operator. Operator? Request a correction or opt out at https://glimind.com/opt-out.

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