Outbox MCP Server

by fieldcure Your server? Claim it

local only

Outbox runs on your own machine — the client starts it, so there is no endpoint to ping. Last commit 25 May 2026.

Multi-channel messaging MCP server for Slack, Telegram, Email, KakaoTalk, and Discord.

—

Installs / week

not published

Stars

0 open issues

25 May 2026

Last commit

from GitHub

MIT

License

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.

Runs an external command src/FieldCure.Mcp.Outbox/OAuth/BrowserOAuthFlow.cs:196

            Process.Start(new ProcessStartInfo

Sends data to a third-party sink src/FieldCure.Mcp.Outbox/Setup/DiscordSetup.cs:12

        "https://discord.com/api/webhooks/",

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.

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Outbox — questions

Answers built from our own checks of this server.

Why is there no uptime for Outbox?

Outbox runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone.

Is Outbox open source?

Yes — it is published under the MIT licence, written in C# and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.