Mailgo Campaign Suite MCP Server

AI-powered cold email campaign management through Model Context Protocol (MCP).

Overview

Mailgo Campaign Suite MCP Server connects your AI assistant directly to the Mailgo cold email platform. Through natural conversation, you can verify email addresses, claim pre-warmed mailboxes, launch campaigns, manage their lifecycle, and pull analytics — without touching any UI.

The server runs as a remote HTTP service. To connect your AI client, you only need a Mailgo API token and the server URL.

What You Can Do

Email Verification

Before sending, verify your contact list for deliverability. The AI will submit up to 1000 addresses in one batch and return them categorized:

• valid — safe to send

• invalid — bad address format or non-existent

• domain_error — domain unreachable or misconfigured

• unknown — inconclusive result

• unchecked — not processed within timeout

Example prompt: "Verify these 200 email addresses before I create a campaign"

Free Mailbox

Claim a free pre-warmed sending mailbox from Mailgo (60-day validity, sender score 90+). Useful for getting started without configuring your own domain.

Example prompt: "Claim a free mailbox for me to use as a sender"

Campaign Creation

Create a fully personalized cold email campaign in one step. The AI handles:

• Uploading the HTML email content

• Creating the campaign with your send schedule and daily limit

• Adding all recipient leads (with name, company, title, domain)

• Activating the campaign

Personalization placeholders available in subject and body:

Note: Always provide the corresponding data list when using a placeholder. Unresolved placeholders render as blank gaps in the email.

Example prompt: "Create a campaign to these 50 leads, send Mon–Fri 9am–6pm Shanghai time, limit 30 per day"

Campaign Management

Control your campaigns at any stage:

Example prompt: "Pause my Q2 Outreach campaign" / "List all active campaigns"

Campaign Reports

Pull analytics at any granularity:

Example prompt: "How is my campaign performing?" / "Show me all replies from campaign 12345 with the message content"

Getting Started

Step 1 — Get Your API Token

1. Open app.mailgo.ai and sign up / log in

2. Click your profile in the bottom-left corner and select Personal Tokens

3. Click Create Token, then copy the generated token

Step 2 — Connect Your AI Client

Claude Desktop / claude.ai

Claude connects to remote MCP servers through the UI, not a config file:

1. Open Settings → Connectors

2. Click "+" → Add custom connector

3. Enter the server URL: https://mcp.leadsnavi.com/mcp

4. Click Advanced settings and add a custom header:

   • Header name: X-API-Key

   • Header value: your token from Step 1

5. Click Add to save

Cursor

Add the following to your Cursor MCP configuration (~/.cursor/mcp.json):

{
  "mcpServers": {
    "mailgo": {
      "url": "https://mcp.leadsnavi.com/mcp",
      "headers": {
        "X-API-Key": "<YOUR_MAILGO_TOKEN>"
      }
    }
  }
}

Other MCP clients

For any MCP client that supports remote Streamable HTTP transport, configure:

• URL: https://mcp.leadsnavi.com/mcp

• Header: X-API-Key: <YOUR_MAILGO_TOKEN>

Step 3 — Start Using It

Once connected, just talk to your AI assistant naturally:

"Verify these emails: alice@example.com, bob@example.com"
"Claim a free sending mailbox for me"
"Create a cold email campaign to my lead list"
"Show me the performance overview for campaign 98765"
"List all my paused campaigns"

Support

• GitHub Issues: leadsnavi-mcp-server/issues

Made with by the Leadsnavi Team