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PopNx MCPMCP servers for people who use AI · explained in plain words

Sentfrom MCP

by sentfromaiversion 0.4.1i★ –iComputer or cloud
Registry nameai.sentfrom/mcp

Install

Overview

Description from the maker (original English)

Email for AI agents: inboxes, send/reply/forward, search, threads, webhooks — 21 SentFromAI tools.

PopNx MCP’s three pillars

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

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
  • You need to fill in: SENTFROMAI_API_KEY, Authorization

Install

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

Before you install

  • Basic checks: 1 of 1 passed
  • Runs on the maker’s server: what you ask it goes through their server.
  • You fill in yourself: SENTFROMAI_API_KEY, SENTFROMAI_BASE_URL, Authorization

Values marked secret are keys to your account. Never share them or paste them into a chat.

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?

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

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Or run it on your computer

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

{
  "mcpServers": {
    "sentfrom": {
      "command": "npx",
      "args": [
        "-y",
        "sentfromai-mcp"
      ],
      "env": {
        "SENTFROMAI_API_KEY": "your-value",
        "SENTFROMAI_BASE_URL": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add --transport http sentfrom https://api.sentfrom.ai/mcp --header 'Authorization: your-value'

Or run it on your computer

claude mcp add sentfrom --env SENTFROMAI_API_KEY=your-value --env SENTFROMAI_BASE_URL=your-value -- npx -y sentfromai-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "sentfrom": {
      "url": "https://api.sentfrom.ai/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

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": {
    "sentfrom": {
      "command": "npx",
      "args": [
        "-y",
        "sentfromai-mcp"
      ],
      "env": {
        "SENTFROMAI_API_KEY": "your-value",
        "SENTFROMAI_BASE_URL": "your-value"
      }
    }
  }
}

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": {
    "sentfrom": {
      "type": "http",
      "url": "https://api.sentfrom.ai/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Or run it on your computer

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "sentfrom": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "sentfromai-mcp"
      ],
      "env": {
        "SENTFROMAI_API_KEY": "your-value",
        "SENTFROMAI_BASE_URL": "your-value"
      }
    }
  }
}

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.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

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

Values you fill in

  • SENTFROMAI_API_KEY secret required env
    SentFromAI API key (sf_live_…) from https://console.sentfrom.ai
  • SENTFROMAI_BASE_URL env
    Override the API base URL (default https://api.sentfrom.ai)
  • Authorization secret required HTTP header
    Bearer

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

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

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 6, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified against the domain sentfrom.ai (the registry checks domain ownership)

  • … 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

  • … Not checked yet

    Endpoint responds

    Not checked yet; we check endpoints in rotation

  • … Not checked yet

    Sign-in with OAuth

    Not checked yet; we check endpoints in rotation

  • … 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 1767 servers in this category
  • Published to the registry more recently than 42% of the other 1767 servers in this category
  • Basic checks equal to or better than 100% of the other 1767 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 Sentfrom MCP safe?

It passed 1 of 1 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?

You need to fill in: SENTFROMAI_API_KEY, Authorization

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 (0.4.1) reached the registry 37 days ago.

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 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.

sentfromai-mcp

This branch prepares 0.5.0-beta.2. Use its pinned install commands only after the release operator confirms publication; a source checkout is not a published release. Existing marketplace, Gemini, Cursor and server-directory defaults remain on the stable mail release. The beta companion is enabled explicitly through the local installation instructions below.

MCP server for SentFromAI — email infrastructure for AI agents.

Gives any MCP-capable agent (Claude Code, Claude Desktop, Cursor, VS Code, Gemini CLI, Codex, OpenClaw, or your own MCP host) email as native tools: create inboxes, send, reply, forward, search, read threads, manage drafts, custom domains, webhooks, and allow/block rules — 21 tools, each a thin wrapper over the SentFromAI REST API. Every tool carries MCP annotations (read-only / write / send / delete) so hosts can group them and confirm the irreversible ones.

Use an existing SentFromAI API key (sf_live_…), or follow the agent setup guide to bootstrap an inbox through REST when agent signup is enabled. New agent accounts can receive and read before their human claims them; sending and other changes require that claim. The console remains available for human signup.

Let your agent install it

Paste this into your agent (Claude Code, OpenClaw, Gemini CLI, any MCP-capable agent):

Set up email for yourself: https://docs.sentfrom.ai/agent-install.md

Bootstrap uses POST /v1/agent-signups, not an MCP tool: MCP requires the key returned by signup. Save a random Idempotency-Key before the request and reuse it with the same body for retries within the replay window. Save the response privately; give its claim_url only to your operator in your existing chat. GET /v1/account reports current capabilities; POST /v1/account/claim-link refreshes a link with the original API key. Claiming preserves the inbox and key.

Use your host's protected credential configuration. Never put a real key in chat, shell commands, source control or logs. Configure SENTFROMAI_API_KEY in the stdio server environment privately before starting it; examples below show placeholders only. For hosted MCP, configure its Bearer header privately. This onboarding flow needs the matching API and console rollout; the package itself does not create accounts or bypass account limits.

Install

Claude Code

As a plugin (asks for the key when you enable it, and adds a skill that teaches Claude email etiquette):

claude plugin marketplace add sentfromai/sentfromai-mcp

claude plugin install sentfromai@sentfromai

Or as a plain MCP server:

claude mcp add sentfromai -- npx -y sentfromai-mcp@0.4.1
Claude Desktop, Cursor, Windsurf, Cline, any JSON-config host
{

"mcpServers": { "sentfromai": { "command": "npx", "args": ["-y", "sentfromai-mcp@0.4.1"], "env": { "SENTFROMAI_API_KEY": "sf_live_…" } } } }

Cursor one-click (then paste your key into the generated config):

Cursor and Grok Bot (plugin)

Install SentFromAI from the Cursor Marketplace; Grok Bot lists the same plugin under Settings, Plugins. It connects to the hosted endpoint and asks for your API key on install. To try it before it is listed, copy this repo into ~/.cursor/plugins/local/sentfromai and reload Cursor.

VS Code

Add npx -y sentfromai-mcp@0.4.1 through VS Code's MCP configuration and enter SENTFROMAI_API_KEY in a protected input.

Gemini CLI
gemini extensions install https://github.com/sentfromai/sentfromai-mcp

Gemini asks for the API key on install and keeps it in your keychain.

Codex CLI
codex mcp add sentfromai -- npx -y sentfromai-mcp@0.4.1
OpenClaw
openclaw mcp add sentfromai --command npx --arg -y --arg sentfromai-mcp@0.4.1

openclaw skills install git:sentfromai/sentfromai-mcp

Full guide: docs.sentfrom.ai/frameworks/openclaw.

Hosted endpoint (no install)

The same 21 tools are served over Streamable HTTP at https://api.sentfrom.ai/mcp for hosts that only speak remote MCP (claude.ai connectors, ChatGPT apps, Meta Muse, Cursor remote servers, MCP Inspector). Authenticate with Authorization: Bearer sf_live_… (an x-api-key header also works), or let OAuth-capable hosts sign you in: the endpoint publishes RFC 9728 resource metadata pointing at SentFromAI's authorization server.

claude mcp add --transport http sentfromai https://api.sentfrom.ai/mcp

Tools

AreaToolsAnnotation
Inboxescreate_inbox · list_inboxes · delete_inboxwrite · read · delete
Messagessend_message · reply_to_message · forward_messagesend (irreversible, open world)
get_message · search_messagesread
Threadslist_threads · get_threadread
Draftscreate_draft · send_draft · list_draftswrite · send · read
Domainsadd_domain · get_domainwrite · read
Webhookscreate_webhook · list_webhooks · delete_webhookwrite · read · delete
Allow/blockadd_address_rule · list_address_rules · delete_address_rulewrite · read · delete

Replies thread correctly (In-Reply-To/References set automatically), search supports keyword, semantic, and hybrid modes, and sends respect the same idempotency and suppression rules as the REST API. API failures come back as tool results with isError and the HTTP status, so the model can read a 401 (bad key) or 402 (plan limit) and tell you instead of retrying.

Configuration

Env varRequiredDefault
SENTFROMAI_API_KEYyes—
SENTFROMAI_BASE_URLnohttps://api.sentfrom.ai

Programmatic use

The tools are exported so you can embed them in your own MCP host or transport:

import { createServer, TOOLS, callTool, createApi } from 'sentfromai-mcp'

const server = createServer({ apiKey: process.env.SENTFROMAI_API_KEY }) await server.connect(yourTransport)

Privacy

This server keeps no state and stores nothing locally. Every tool call is one HTTPS request to api.sentfrom.ai authenticated with your API key. SentFromAI's privacy policy: https://sentfrom.ai/privacy · terms: https://sentfrom.ai/terms.

Docs

Optional Agent Login companion

For a new human account and agent, follow the bundled SentFrom beta onboarding guide. It includes a validated configuration example, the independent human activation steps, and recovery instructions. Beta admission and first-factor activation require the advertised operator process.

The email tools and application sign-in are separate capabilities. The existing hosted mail MCP endpoint does not hold your local browser or application sessions. The new local companion adds enrollment, human approval, application sign-in, authenticated application operations and logout using the open Agent Login SDK. It targets the working draft; it is not a claim that the hosted service is already deployed or certified.

The planned beta uses agentlogin@0.2.0-beta.2, @agentlogin/mcp@0.2.0-beta.2 and sentfromai-mcp@0.5.0-beta.2. These versions are release candidates until the release operator confirms publication. Before publication, install the matching reviewed tarballs supplied by that operator:

npm install --save-exact /absolute/artifacts/agentlogin-0.2.0-beta.2.tgz /absolute/artifacts/agentlogin-mcp-0.2.0-beta.2.tgz /absolute/artifacts/sentfromai-mcp-0.5.0-beta.2.tgz

After those exact versions are confirmed public, a registry installation is:

npm install --save-exact agentlogin@0.2.0-beta.2 @agentlogin/mcp@0.2.0-beta.2 sentfromai-mcp@0.5.0-beta.2

Use a maintained Node.js release satisfying the companion's Node.js 22.13 minimum. The mail-only package retains its existing runtime requirement.

Create a private mode-0600 Agent Login config following the companion README. Set the selected identity's handle to the existing inbox, enrollmentEndpoint to the actual deployed identity service's /identity/enrollment-requests, and enrollmentCredentialEnv to SENTFROMAI_API_KEY. Supply the latter only through the host's protected secret configuration. Set ownerPortal to the actual human identity service origin and ownerApprovalPath to /identity/transactions/{transaction_id} for direct human approval links. Configure each target application explicitly; a provider catalog does not authorize application access.

For a Git-cloned Claude plugin, install the exact companion in that checkout with npm install --no-save @agentlogin/mcp@0.2.0-beta.2 after its publication; installing it in an unrelated project does not make it available to this wrapper. For other hosts, use both packages from the same npm installation directory.

For Claude plugin installations, the opt-in mcp-with-identity.json contains both local servers. Select it as the plugin's mcpServers configuration and configure identity_config to the absolute private config path. Other MCP hosts can add a local server command node /absolute/package/identity-server.js with AGENTLOGIN_MCP_CONFIG and SENTFROMAI_API_KEY in their protected environment. Keep the existing mail-only configuration when the companion is not installed.

The skills/agent-login skill explains the tool flow. Keys and cookies remain in the local helper's private directory. A successful sign-in authenticates that helper; it does not authenticate a separate browser. Owner approval takes place in the independent human interface and cannot be performed with the mail API key.

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