AI-powered cold email campaign management through Model Context Protocol (MCP).
AI-powered cold email campaign management through Model Context Protocol (MCP). Exposed over MCP by the mailgo cold mail marketing mcp server, that capability becomes something an assistant can invoke while it works, not something you go and do afterwards.
Complete cold email campaign plugin for Mailgo. One plugin handles the entire outreach pipeline:
Everything the assistant can do here goes through one of these:
Product — https://app.mailgo.aiOptional — openpyxl for .xlsx file support (pip install openpyxl)CAN — SPAM Act** (US) — include a physical address and honor opt-out requestsmailgo-auth-setup — authentication guidance (Step 0)mailgo-email-verifier — email verification (Step 1)mailgo-email-optimizer — content optimization rules (Step 3)mailgo-campaign — campaign creation (Step 4)mailgo-campaign-control — lifecycle management (Step 5)mailgo-campaign-report — statistics (Step 6)Concern — DetailScript — Purposeverify_emails.py — Submit + poll email verificationInstallation goes through your MCP client rather than a global install: point it at openpyxl on PyPI and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.
You will need one environment variable: MAILGO_API_KEY. The server will not start without them, which is usually why the tools fail to appear on a first run. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.
MAILGO_API_KEY environment variable (OpenAPI Key from Mailgo) - No third-party dependencies (stdlib only: urllib, json, csv, ssl) - Optional: openpyxl for .xlsx file support (pip install openpyxl)Among the team communication options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Mailgo Cold Mail Marketing's toolset — Product, Optional, CAN and 11 more — is a fair guide to whether it matches your workflow.
This entry was verified against Mailgo Cold Mail Marketing's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.
| Tool | What it does |
|---|---|
| Product | [https://app.mailgo.ai](https://app.mailgo.ai) |
| Optional | openpyxl for .xlsx file support (pip install openpyxl) |
| CAN | SPAM Act** (US) — include a physical address and honor opt-out requests |
| mailgo-auth-setup | authentication guidance (Step 0) |
| mailgo-email-verifier | email verification (Step 1) |
| mailgo-email-optimizer | content optimization rules (Step 3) |
| mailgo-campaign | campaign creation (Step 4) |
| mailgo-campaign-control | lifecycle management (Step 5) |
| mailgo-campaign-report | statistics (Step 6) |
| Concern | Detail |
| Script | Purpose |
| verify_emails.py | Submit + poll email verification |
| claim_free_mailbox.py | Claim pre-warmed mailbox |
| run_campaign.py | Full campaign creation flow |
{
"mcpServers": {
"github-com-leadsnavideveloper-mailgo-cold-mail-marketing-tre": {
"command": "uvx",
"args": ["openpyxl"],
"env": {
"MAILGO_API_KEY": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
MAILGO_API_KEY environment variable (OpenAPI Key from Mailgo) - No third-party dependencies (stdlib only: urllib, json, csv, ssl) - Optional: openpyxl for .xlsx file support (pip install openpyxl)| Variable | Description | Required |
|---|---|---|
| MAILGO_API_KEY | Credential the server authenticates with. | Yes |
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