Email Spam Tester MCP Server

by serg-tanichev Your server? Claim it

answering

Email Spam Tester is answering right now. Last checked 12 min ago. It exposes 4 tools. Last commit 17 Sep 2026.

Test an email before it goes out: a disposable address, 41 checks with RFC citations, a fix plan.

Uptime history 14 hours of history

14 hours agonow

100.0%

Uptime 24h

51 of 51 checks

Tools

read from the server

553 ms

Response time

average over 24h

Stars

last commit 17 Sep 2026

What changed 4

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 18 September 2026. No other catalogue keeps this.

18 Sep 4 tools changed the parameters they ask for get_message_source, get_report, get_test_address and 1 more

Nothing serious here today

Today is the operative word: we check Email Spam Tester every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 12 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add email-spam-tester --transport http https://email-spam-tester.com/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "email-spam-tester": {
      "url": "https://email-spam-tester.com/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.email-spam-tester]
url = "https://email-spam-tester.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "email-spam-tester": {
      "url": "https://email-spam-tester.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "email-spam-tester": {
      "url": "https://email-spam-tester.com/mcp"
    }
  }
}

Available tools 4

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

message

get_message_source

The message exactly as it was received: headers, both bodies, source. Useful when a finding points at a header and the agent needs to see what it actually sent rather than what it believes it sent.

report

get_report

Read an existing report by its slug, without waiting.

test

get_test_address

Reserve a single-use address to send a draft message to. Returns the address and the URL its report will appear at. The address accepts exactly one message and expires after an hour. lang is the language the fix plan will be written in, as an ISO code ("de", "pt-BR"). Set it to the language the person you are working for reads: it decides the plan and the per-check findings on the page they open, and it has to be decided now because the message arrives minutes later over SMTP, which carries no hint of who is waiting for it. Unknown codes fall back to English rather than failing. What you get back from wait_for_report stays English whatever you set: the check lines it quotes come from the report's `summary` field, which is English by design so a script reading it reads the same words every time. The person following report_url sees their own language.

wait

wait_for_report

Wait until the message arrives and has been analysed, then summarise it. Blocks rather than returning "not ready yet": an agent told to poll writes a sleep loop and usually gives up before the analysis finishes.

Endpoints

URL	Transport	State	Latency	Checked
https://email-spam-tester.com/mcp	streamable-http	answering	567 ms	12 min ago

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Email Spam Tester — questions

Answers built from our own checks of this server.

What can Email Spam Tester do?

It exposes 4 tools, read directly from the server on our last check. Among them: get_message_source, get_report, get_test_address, wait_for_report. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Email Spam Tester working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 51 of 51 checks got a reply (100.0%), average response time 553 ms. The bar chart above shows every period we have measured.

How do I connect Email Spam Tester?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Email Spam Tester need an API key?

No. Email Spam Tester completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 4 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Email Spam Tester?

It answers our handshake in 553 ms on average, which is faster than 24% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Email Spam Tester open source?

We cannot say either way: 0 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.