e2a — email for AI agents MCP Server

by e2a Your server? Claim it

answering

e2a — email for AI agents is answering right now. Last checked 13 min ago. Last commit 14 Sep 2026.

Authenticated email gateway for AI agents — per-agent inboxes, HITL approval, SPF/DKIM verified.

Uptime history 48 days of history · worst day 91%

48 days agonow

97.8%

Uptime 24h

89 of 91 checks

—

Tools

hidden behind auth

534 ms

Response time

average over 24h

190

Stars

last commit 14 Sep 2026

What the code does

We read the source, 22 h ago · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Builds a file path from a variable cmd/piguard-eval/main.go:124

    emlPath := filepath.Join(baseDir, entry.EMLPath)

Builds a database query by concatenation internal/webhookpub/worker.go:124, api/openapi.yaml:5214

            select {
            case <-ctx.Done():
                return
            case <-time.After(delay):
                attempt++
                continue

Runs an external command plugins/e2a-labs/skills/autopilot/runtime.mjs:268, plugins/e2a/skills/email-evals/launcher.mjs:73

    const child = spawn(invocation.command, invocation.args, {

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 13 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add mcp-server --transport http https://api.e2a.dev/mcp

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

{
  "mcpServers": {
    "mcp-server": {
      "url": "https://api.e2a.dev/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.mcp-server]
url = "https://api.e2a.dev/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "mcp-server": {
      "url": "https://api.e2a.dev/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "mcp-server": {
      "url": "https://api.e2a.dev/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.

Endpoints

URL	Transport	State	Latency	Checked
https://api.e2a.dev/mcp	streamable-http	sign-in	566 ms	13 min ago

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e2a — email for AI agents — questions

Answers built from our own checks of this server.

Why is there no tool list for e2a — email for AI agents?

The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 97.8% of checks in the last 24 hours got a reply.

Is e2a — email for AI agents working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 89 of 91 checks got a reply (97.8%), average response time 534 ms. The bar chart above shows every period we have measured.

How do I connect e2a — email for AI agents?

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. You sign in through your browser once and the client keeps the session: no key to copy, and it refuses anonymous clients.

How do you sign in to e2a — email for AI agents?

No API key is involved. e2a — email for AI agents answers our knock with an OAuth challenge, so you authorise it once in your browser and the client keeps the session. That is also why we see no tool list: it will not describe itself to an anonymous client, and that is the server working as intended, not a fault.

How fast is e2a — email for AI agents?

It answers our handshake in 534 ms on average, which is faster than 26% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is e2a — email for AI agents open source?

Yes — it is published under the Apache-2.0 licence, written in Go, 190 stars on GitHub and 26 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.