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MailAlign MCP Server

by workers-mike-tusa-mailalign Your server? Claim it
answering

MailAlign is answering right now. Last checked 12 min ago. It exposes 1 tools.

Email header analyzer: SPF/DKIM/DMARC/ARC verdicts, domain alignment, hop delays. No lookups.

Uptime history 25 days of history
25 days agonow
100.0%
Uptime 24h
91 of 91 checks
1
Tools
read from the server
105 ms
Response time
average over 24h
open, no key
Access
streamable-http

Nothing serious here today

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

Three servers free · no card

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.

run in your terminal
claude mcp add mailalign --transport http https://mailalign.mike-tusa.workers.dev/mcp
Settings → Connectors → Add custom connector, then paste this address
https://mailalign.mike-tusa.workers.dev/mcp
~/.codex/config.toml
[mcp_servers.mailalign]
url = "https://mailalign.mike-tusa.workers.dev/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "mailalign": {
      "url": "https://mailalign.mike-tusa.workers.dev/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "mailalign": {
      "type": "http",
      "url": "https://mailalign.mike-tusa.workers.dev/mcp"
    }
  }
}

Available tools 1

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

analyze
analyze_headers
Analyze pasted raw email headers. Reports From / Return-Path / Reply-To / DKIM d= alignment (relaxed and strict), SPF / DKIM / DMARC / ARC verdicts as recorded by the receiving servers (Authentication-Results, ARC-*), the Received hop chain oldest first with per-hop delays and public IPs, and plain-English findings with severity and what each means or how to fix it. Makes no network or DNS calls and does not verify signatures. Header text is not stored. Read-only. Same engine as the MailAlign JSON API (POST /api/analyze).

Endpoints

URLTransportStateLatencyChecked
https://mailalign.mike-tusa.workers.dev/mcp streamable-http answering 90 ms 12 min ago

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MailAlign — questions

Answers built from our own checks of this server.

What can MailAlign do?
It exposes 1 tools, read directly from the server on our last check. Among them: analyze_headers. 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 MailAlign working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 105 ms. The bar chart above shows every period we have measured.
How do I connect MailAlign?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does MailAlign need an API key?
No. MailAlign completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 1 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is MailAlign?
It answers our handshake in 105 ms on average, which is faster than 91% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.