Back to MCP Trust Indexm8ven
C
Emerging
74/100
8 hours ago

mail-mcp

A self-hosted, multi-mailbox MCP server that exposes IMAP/SMTP operations as tools for AI agents, enabling email management like listing folders, reading, searching, sending, and moving messages via natural language.

→ MauricioPerera/mail-mcp· listed on glama

Emerging. No concerning findings. Grades remain capped until the project builds reputation through adoption. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

How we verified

Code Verified⚡ Live Monitored: not connected

Verified is a snapshot. Live keeps it current, and builds your track record.

⚡ Connect GitHub → continuous verification on every pushwhy connect →

Who stands behind it

MauricioPerera

Source: Glama

Is this your MCP?

Claim it to get a verified publisher badge, a free copy of our full audit findings, and direct contact for any high-priority issues we find. Or connect your repo for our deepest verification, Live Monitored: read-only, revoke anytime. What we access →

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Install from

Glama

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// key findings
✅
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
✅
Open source with a license and README
Anyone can audit the code, the license is declared, and the publisher documents what it does.
🔐
You'll be asked for 1 credential: MAIL_MCP_API_TOKEN
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
configMAIL_MCP_ACCOUNTS_PATH
🔐 secretMAIL_MCP_API_TOKENcp .env.example .env # fill in and one MAILMCP_PASS_<ID> per account
configMAIL_MCP_MAX_MESSAGE_SIZE(default 25MB) are returned with bodyTruncated: true
configMAIL_MCP_PORTRuns on 127.0.0.1:4900 by default (see ). Put it behind a
configMAIL_MCP_WEBHOOKS_DB_PATH
// quality suggestions

Tool annotations

No tools have read-only/destructive annotations

Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.

All four hints declared on every tool

13/13 tools missing one or more hints — list_mailboxes (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); list_folders (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); list_messages (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +10 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.

For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.

Tool inputs are validated

12/13 tool handlers declare input schemas (92%)

Declare an inputSchema with zod/joi/yup on every tool definition.

Tool test coverage

Only 0/13 tools referenced in tests (0%)

Write tests that reference each tool by name so every tool has at least one test.

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 4 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
[![M8ven Score](https://m8ven.ai/badge/mcp/mauricioperera-mail-mcp-ibitmg)](https://m8ven.ai/mcp/mauricioperera-mail-mcp-ibitmg)
Shows your grade and updates automatically. Prefer no grade? Append ?variant=verified to the badge URL.
commit: 7ee71a746cdd3c2e1df1666a40dc9b826917e07b
code hash: 292faedd31b0814ace58220142401d7118429746875c5eb5804aa94f853c6779
verified: 8/19/2026, 9:29:29 AM
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