smails

Name: smails
Author: pexni

by pexniversion 0.1.0i★ –iComputer or cloud

Registry nameio.github.pexni/smails

Install

Overview

Description from the maker (original English)

Disposable email inboxes for AI agents: create an address, wait for the verification email.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi3 of 3 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Computer or cloud
Transport: stdio, Streamable HTTP
Category: Chat & email

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 3 of 3 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet
npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://smails.dev/mcp

Or run it on your computer

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "smails": {
      "command": "npx",
      "args": [
        "-y",
        "@smails/cli",
        "mcp"
      ]
    }
  }
}

Run this in your terminal

claude mcp add --transport http smails https://smails.dev/mcp

Or run it on your computer

claude mcp add smails -- npx -y @smails/cli mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "smails": {
      "url": "https://smails.dev/mcp"
    }
  }
}

Or run it on your computer

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "smails": {
      "command": "npx",
      "args": [
        "-y",
        "@smails/cli",
        "mcp"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "smails": {
      "type": "http",
      "url": "https://smails.dev/mcp"
    }
  }
}

Or run it on your computer

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "smails": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@smails/cli",
        "mcp"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://smails.dev/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

The server asks you to sign in before it lists its tools.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account pexni, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
✓ Pass
Endpoint responds
Responded in 169 ms (HTTP 401)
✓ Pass
Sign-in with OAuth
Declares OAuth sign-in, so your AI app can take you to log in
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Chat & emaili

More stars than 0% of the other 1771 servers in this category
Published to the registry more recently than 92% of the other 1771 servers in this category
Basic checks equal to or better than 100% of the other 1771 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is smails safe?

It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.0) reached the registry yesterday.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Vexa, emailmd, MCP WhatsApp Cloud

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Vexa

by Vexa-ai

Meeting bot and transcripts for Google Meet, Teams and Zoom. Live or after, speakers labelled.

Runs in the cloud★ 2,949Apache-2.0Updated 2 months ago

Install

emailmd

by anypost

Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails.

Computer or cloud★ 1,385MITUpdated 31 days ago

Install

MCP WhatsApp Cloud

by codespar

MCP server for WhatsApp Cloud API (Meta) — messages, media, and templates via Graph API

Runs on your computer★ 277MITUpdated 5 months ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

@smails/cli

Disposable email for AI agents. Create an inbox, use the address to sign up somewhere, and wait for the verification code — from a terminal, a script, Claude Code or Codex.

→ [smails.dev](https://smails.dev)

Requires Node.js 22.18 or newer. No runtime dependencies.

Sign in (once)

npx @smails/cli login

It prints a link and opens your browser: sign in with GitHub and confirm the code. The session is stored in ~/.config/smails/credentials.json and shared with the MCP server below.

Get a verification code

npx @smails/cli create                    # → brave-otter-k3j9x2m8@smails.dev

npx @smails/cli wait --subject code # blocks until it arrives, prints the message npx @smails/cli wait --json | jq -r .text # in scripts

wait exits with status 2 if nothing arrives before --timeout (default 120 s).

Commands

Command
`login` / `logout` / `whoami`	Account and today's quota
`create`	New mailbox; becomes the current one
`list`	Your active mailboxes
`inbox [address]`	Messages (default: current mailbox)
`read`	One message (short id prefix works)
`wait [address]`	Wait for new mail: `--from`, `--subject`, `--timeout`, `--since`
`delete`	Delete a message
`mcp`	Run the MCP server over stdio

Add --json for machine-readable output. npm i -g @smails/cli to type smails instead of npx @smails/cli.

MCP server

Remote (recommended) — or just tell your agent: Set up smails for me by following https://smails.dev/setup.md

claude mcp add --transport http --scope user smails https://smails.dev/mcp   # Claude Code, then /mcp to sign in

codex mcp add smails --url https://smails.dev/mcp && codex mcp login smails # Codex

Local (stdio):

claude mcp add smails -- npx -y @smails/cli mcp   # Claude Code

codex mcp add smails -- npx -y @smails/cli mcp # Codex

Sign in with npx @smails/cli login, or let the agent call the login tool, which returns a link for you to confirm. Tools: create_mailbox, wait_for_message, list_messages, read_message, list_mailboxes, delete_message, whoami.

Upgrading from 0.0.x

0.1 requires signing in; the anonymous API is gone and old saved mailboxes no longer work. Run npx @smails/cli login, then create.

Environment

SMAILS_URL — server to use (default https://smails.dev).

License

MIT

smails

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Or run it on your computer

Or run it on your computer

Or run it on your computer

Or run it on your computer

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Chat & emaili

Common questions

Alternatives

Vexa

emailmd

MCP WhatsApp Cloud

README from the maker

@smails/cli

Sign in (once)

Get a verification code

Commands

MCP server

Upgrading from 0.0.x

Environment

License