Cold Email

Name: Cold Email
Author: Bluecraft-AI

by Bluecraft-AIversion 1.0.1i★ –iRuns in the cloud

Registry nameio.github.Bluecraft-AI/cold-email

Install

Overview

Description from the maker (original English)

Generate hyper-personalized cold email sequences via AI.

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 checksi1 of 1 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: Runs in the cloud
Transport: Streamable HTTP
Category: Chat & email

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.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

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://mcp.machfive.io/mcp/{api_key}

The address contains {…} parts that only you know (such as your account), so copy it and fill them in.

Run this in your terminal

claude mcp add --transport http cold-email 'https://mcp.machfive.io/mcp/{api_key}'

The address contains {…} parts that only you know (such as your account), so copy it and fill them in.

Or copy the settings yourself

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

{
  "mcpServers": {
    "cold-email": {
      "url": "https://mcp.machfive.io/mcp/{api_key}"
    }
  }
}

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.

The address contains {…} parts that only you know (such as your account), so copy it and fill them in.

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "cold-email": {
      "type": "http",
      "url": "https://mcp.machfive.io/mcp/{api_key}"
    }
  }
}

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://mcp.machfive.io/mcp/{api_key}

The address contains {…} parts that only you know (such as your account), so copy it and fill them in.

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

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 8, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account Bluecraft-AI, 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
– Not applicable
Endpoint responds
The address needs your own account values, so we cannot check it for you
– Not applicable
Sign-in with OAuth
The address needs your own account values, so we cannot check it for you
… 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 1838 servers in this category
Published to the registry more recently than 3% of the other 1838 servers in this category
Basic checks equal to or better than 100% of the other 1838 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 Cold Email 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?

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?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.1) reached the registry 9 months 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

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

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by Vexa-ai

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

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emailmd

by anypost

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

Computer or cloud★ 1,385MITUpdated 32 days ago

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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.

MachFive MCP Server

What is MachFive MCP Server?

MCP (Model Context Protocol) is an open standard that lets AI assistants like Claude connect to external apps. Think of it as a universal translator between AI and software.

MachFive MCP Server is a connector that lets your AI assistants communicate directly with your MachFive account. Your AI can list campaigns, generate hyper-personalized cold email sequences, manage lead lists, and export results — all through natural conversation.

Instead of logging into MachFive, uploading CSVs, and waiting for results, you can simply tell your AI what you need:

"Generate a 3-email sequence for jane@acme.com using my SaaS Founders campaign"
"Show me my MachFive campaigns"
"Submit these 50 leads for batch processing"
"Check the status of my latest batch and export the results"

Your AI understands the request, connects to MachFive through MCP, and executes the action — all in seconds.

How to Set Up MachFive MCP

Step 1: Get Your API Key (2 min)

Log in to your MachFive account at app.machfive.co
Go to Settings → API Keys
Click Create API Key
Copy your key and store it securely

⚠️ Keep this key private — it's like a password to your MachFive account.

Step 2: Connect Your AI Client

Option A: Claude Desktop (Easiest)

Open the Claude Desktop app
Go to Settings → Connectors
Click Add custom connector
Enter:

Name: MachFive
Remote MCP server URL: https://mcp.machfive.co/mcp/YOUR_API_KEY

Replace YOUR_API_KEY with the API key you created
Click Add — no restart needed!

Option B: Claude Desktop (Config File)

If you prefer editing the config file directly:

Go to Settings → Developer → Edit Config
Add this to your config file (replace YOUR_API_KEY):

"mcpServers": { "machfive": { "url": "https://mcp.machfive.co/mcp", "headers": { "Authorization": "Bearer YOUR_API_KEY" } } } }

Save and restart Claude Desktop

Option C: Cursor

Open Cursor → Settings (⌘ + ,)
Search for MCP
Click Edit in settings.json
Add the following (replace YOUR_API_KEY):

"mcpServers": { "machfive": { "url": "https://mcp.machfive.co/mcp", "headers": { "Authorization": "Bearer YOUR_API_KEY" } } } }

Save and restart Cursor

Option D: n8n (AI Agents & Workflows)

For automating workflows with AI agents in n8n:

Add the MCP Client node to your workflow
Select Streamable HTTP as the transport option
Enter the URL: https://mcp.machfive.co/mcp/YOUR_API_KEY
Connect to your AI agent node

Option E: Other MCP Clients

For any MCP-compatible client, use the URL with your API key:

https://mcp.machfive.co/mcp/YOUR_API_KEY

This URL works with any client that supports Streamable HTTP transport.

Step 3: Test It! (30 sec)

Open your AI assistant and try:

"List my MachFive campaigns"

If you see your campaign list, you're connected! 🎉

Authentication

MachFive MCP supports three authentication methods:

Method	Format	Best For
URL path	`https://mcp.machfive.co/mcp/YOUR_API_KEY`	Clients without header support, n8n
Authorization header	`Authorization: Bearer YOUR_API_KEY`	Claude Desktop, Cursor
Authorization header (no prefix)	`Authorization: YOUR_API_KEY`	Simplified integrations

The Bearer prefix is optional for the Authorization header.

Available Tools

MachFive MCP provides 6 tools for cold email generation:

📋 Campaigns

Tool	Description
`list_campaigns`	List all campaigns in your workspace. Call this first — you need a campaign ID for generation.

✉️ Email Generation

Tool	Description
`generate_sequence`	Generate a personalized email sequence for one lead (synchronous, 3-10 min).
`generate_batch`	Submit multiple leads for batch generation (async, returns immediately with a list ID).

📦 List Management

Tool	Description
`list_lists`	Browse lead lists and batch jobs.
`get_list_status`	Poll a batch job's status until completed or failed.
`export_list`	Download results as JSON or CSV when a batch is complete.

What Can You Do?

✉️ Email Generation

"Generate a cold email sequence for sarah@notion.so using my Gator 100 campaign"
"Write 5 personalized emails for John Smith, VP of Sales at Acme Corp"
"Generate emails for this lead with a focus on our ROI case study angle"

📦 Batch Processing

"Submit these 20 leads for batch email generation"
"Check the status of my latest batch"
"Export my completed batch as CSV"

📋 Campaign Management

"List my MachFive campaigns"
"What campaigns do I have?"
"Show me my campaign IDs"

📊 Results & Export

"Export the results from my last batch as JSON"
"Download the CSV for my SaaS Founders list"
"Show me the generated emails for list xyz"

Example Conversations

Quick Single Lead Generation

You: "Generate a 3-email sequence for jane@acme.com using my Marketing Agencies campaign. Her name is Jane Doe and she's the VP of Growth."

AI: "I'll generate that sequence now. This typically takes 3-5 minutes since MachFive researches the prospect and crafts personalized emails..."

*\[3 minutes later\]*

AI: "Here's your 3-email sequence for Jane Doe at Acme:

Email 1 — Subject: Quick question, Jane

Hi Jane, I noticed Acme's recent expansion into..."

Batch Processing Workflow

You: "I have 25 leads to process. Here they are: \[paste leads\]. Use my SaaS Founders campaign."

AI: "Batch submitted! I got list ID abc-123. Let me check the status..."

*\[polls automatically\]*

AI: "Your batch is complete — all 25 leads processed with 75 emails generated. Would you like me to export as CSV or JSON?"

Morning Workflow Check

You: "What campaigns do I have, and are there any batches still processing?"

AI: "You have 3 campaigns: First Campaign, Gator 100, and Marketing Agencies. All current batches are completed — no pending jobs."

Troubleshooting

Problem	Solution
Connection failed	Double-check your API key is correct
"Invalid API key" error	Regenerate your API key in MachFive settings
No response	Restart your AI client
Timeout on generate_sequence	Normal — generation takes 3-10 minutes. Don't retry.
Server unavailable	Check your internet connection and try again

Frequently Asked Questions

1. Do I need to know how to code?

No. Setup takes about 5 minutes and just requires pasting your API key into your AI assistant's settings.

2. Which AI assistants work with this?

Any MCP-compatible client, including:

Claude Desktop (Anthropic)
Cursor (AI code editor)
n8n (AI agent workflows)
Any app supporting Streamable HTTP transport

3. Is my data safe?

Yes. The connection uses your personal API key over encrypted HTTPS. Your AI can only access what your API key permits. Each user authenticates with their own key — MachFive never stores or shares API keys on the MCP server.

4. What can my AI do with MachFive?

Your AI can:

List your campaigns
Generate personalized cold email sequences for individual leads
Submit batches of leads for bulk generation
Check batch processing status
Export completed results as CSV or JSON

5. How much does it cost?

The MCP server is free with your MachFive subscription. Email generation uses your account's credits as normal.

6. What's the connection URL?

https://mcp.machfive.co/mcp

7. How long does email generation take?

Single lead generation (generate_sequence) takes 3-10 minutes because MachFive researches the prospect and crafts truly personalized emails. Batch generation (generate_batch) returns immediately — processing happens in the background, and you poll for completion.

8. What if something goes wrong?

Generation is non-destructive — it creates new email sequences without affecting existing data. If a batch fails, simply submit a new one.

API Endpoint

Endpoint	URL
Health check	`https://mcp.machfive.co/`
MCP protocol	`https://mcp.machfive.co/mcp`
MCP with API key	`https://mcp.machfive.co/mcp/YOUR_API_KEY`

Need help? Contact us at support@machfive.co

MCP Documentation: modelcontextprotocol.io

Cold Email

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

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

MachFive MCP Server

What is MachFive MCP Server?

How to Set Up MachFive MCP

Step 1: Get Your API Key (2 min)

Step 2: Connect Your AI Client

Option A: Claude Desktop (Easiest)

Option B: Claude Desktop (Config File)

Option C: Cursor

Option D: n8n (AI Agents & Workflows)

Option E: Other MCP Clients

Step 3: Test It! (30 sec)

Authentication

Available Tools

📋 Campaigns

✉️ Email Generation

📦 List Management

What Can You Do?

✉️ Email Generation

📦 Batch Processing

📋 Campaign Management

📊 Results & Export

Example Conversations

Quick Single Lead Generation

Batch Processing Workflow

Morning Workflow Check

Troubleshooting

Frequently Asked Questions

1. Do I need to know how to code?

2. Which AI assistants work with this?

3. Is my data safe?

4. What can my AI do with MachFive?

5. How much does it cost?

6. What's the connection URL?

7. How long does email generation take?

8. What if something goes wrong?

API Endpoint