EmptyInbox MCP server

by cnohall·io.github.cnohall/emptyinbox·v1.3.0

Zero-config disposable email inboxes for AI agents: create, read mail, await verify codes.

B78/100grade B

What users say

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Safety scan

B78/100

Adoption

Growing

4 stars246 downloads/wk

Reviews

Nobody has reviewed EmptyInbox yet.

If you have run it, two minutes of your experience saves the next person an afternoon.

No tool declarations could be read from the package source. They show once the server is installed.

scanner v0.1.3 · 2026-09-19 · same rubric, same numbers if you re-run it

no findings

Code scan5 source files scanned25/25
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitystatic API keys via environment variables6/15
Maintenancelast push 1 days ago15/15
Maintainer identitynamespace and repository owner differ; GitHub account older than a year5/10

Overall 78/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

Runs npx -y emptyinbox-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add emptyinbox -- npx -y emptyinbox-mcp

Is EmptyInbox MCP server safe?: Mostly: it is graded B (78/100). Read the EmptyInbox safety report
How do I install EmptyInbox?: It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.
Does EmptyInbox need an API key?: Yes. The registry entry asks for EMPTYINBOX_API_KEY.
Is EmptyInbox maintained?: The last commit was in the last day (2026-09-19). The latest release is v1.3.0.
What can I use instead of EmptyInbox?: Servers from other publishers that do the same job: Best Tempmail MCP server, Atomic Mail MCP server and MCP server. Compare all EmptyInbox alternatives.

Same job from other publishers: the closest match first, then the best rated.

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Atomic Mail
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MCP
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MAILTYPE — Email Domain Capability Intelligence
Email-domain intelligence: MX capability, provider, disposable status, SPF, DMARC, and MTA-STS.
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Email Spam Tester
Test an email before it goes out: a disposable address, 41 checks with RFC citations, a fix plan.
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Local package. It runs on your machine, not through the gateway.

EMPTYINBOX_API_KEYsecretExisting EmptyInbox API key. Omit to auto-register a free account on the first tool call that needs one; the key is then written to ~/.emptyinbox.json.

Claim it to keep the listing current and reply to reviews. Claiming never changes the grade or hides a review.

Shows the safety grade and links back to this page. It updates itself after every scan and review.

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