The Cold Email MCP server,
connected in one click.
Generate hyper-personalized cold email sequences via AI. Connect the official Cold Email MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add Cold Email to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http cold-email https://mcp.machfive.io/mcp/{api_key}Run in your terminal, then restart Claude Code.
Cold Email · https://mcp.machfive.io/mcp/{api_key}
What your AI can do with Cold Email
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “list_campaigns”: List campaigns in the user's MachFive workspace. CALL THIS FIRST before generate_sequence or generate_batch — you need a campaign ID to gen.”
“Use “generate_sequence”: Generate a personalized cold email sequence for ONE lead. This is SYNCHRONOUS — the request takes 3-10 minutes because MachFive researches.”
“Use “generate_batch”: Submit multiple leads for batch email sequence generation (ASYNC). Returns IMMEDIATELY with a list_id. Processing runs in the background. A.”
“Use “list_lists”: List lead lists (batch jobs) in the user's MachFive workspace. Useful for browsing past batches, checking what's in progress, or finding a.”
How secure is the Cold Email MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Cold Email holds up.
Official endpoint
Operated by Cold Email (machfive.io) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If Cold Email adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick Cold Email
Choose Cold Email in the gate directory. No sign-in needed.
Use it anywhere
Cold Email's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools Cold Email exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
list_campaigns — List campaigns in the user's MachFive workspace. CALL THIS FIRST before generate_sequence or generate_batch — you need a campaign ID to gen
generate_sequence — Generate a personalized cold email sequence for ONE lead. This is SYNCHRONOUS — the request takes 3-10 minutes because MachFive researches
generate_batch — Submit multiple leads for batch email sequence generation (ASYNC). Returns IMMEDIATELY with a list_id. Processing runs in the background. A
list_lists — List lead lists (batch jobs) in the user's MachFive workspace. Useful for browsing past batches, checking what's in progress, or finding a
get_list_status — Check the processing status of a lead list. Use this to POLL after calling generate_batch. Call every 15-30 seconds until processing_status
export_list — Download the generated email sequences for a COMPLETED list. Only call this AFTER get_list_status shows processing_status = 'completed'. If
Who runs the Cold Email MCP server?
The Cold Email MCP server at a glance
https://mcp.machfive.io/mcp/{api_key}Questions, answered
Is there an official Cold Email MCP server?
Yes — Cold Email operates its own remote MCP server at mcp.machfive.io. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect Cold Email to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Cold Email in the directory. No account or sign-in is needed. From then on, Cold Email's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Cold Email runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Cold Email MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect Cold Email in minutes. No credit card required.
Connect more than just Cold Email
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Cold Email in: Claude · Claude Code · ChatGPT · Cursor · VS Code