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Mailgo Cold Mail Marketing

★ 5

from leadsnaviDeveloper

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

🔥🔥🔥✓ VerifiedAccount requiredNeeds API keys
#email#git#security#marketing

mailgo-campaign-suite

Complete cold email campaign plugin for Mailgo. One plugin handles the entire outreach pipeline:

  1. Verify recipient emails (async submit + poll)
  2. Claim a free pre-warmed mailbox (90+ sender score, 60 days)
  3. Optimize email content (spam triggers, HTML cleanup, deliverability)
  4. Send campaigns (content upload, lead import, activation)
  5. Manage campaign lifecycle (activate, pause, delete, list)
  6. Report campaign statistics (overview, per-round, daily progress)

Publisher

This plugin is published by LeadsNavi, the company behind the Mailgo cold email platform.

Security & Credentials

This skill requires a Mailgo OpenAPI Key (MAILGO_API_KEY) to operate. Please read before using:

ConcernDetail
What the token can doClaim mailboxes, create/activate/pause/delete campaigns, verify emails, read campaign reports — all actions on your Mailgo account.
How to obtain itLog in to https://app.mailgo.ai → Click your avatar in the bottom-left corner → Personal Tokens → Create Token → Copy the token. See SKILL.md Step 0 for step-by-step instructions.
How it is usedSent as X-API-Key: {token} header to api.leadsnavi.com — the official Mailgo backend (LeadsNavi is the parent brand behind Mailgo; see app.mailgo.ai and the Mailgo website for details).
How to stay safeSet as a local environment variable only — never paste into chat.
How to revokeGo to https://app.mailgo.ai → Personal Tokens → Delete the token.
API endpoints calledAll calls go to https://api.leadsnavi.com (Mailgo's official API) — email verification, mailbox claiming, campaign CRUD, and reporting. Review the bundled Python scripts for exact endpoints.

MAILGO_API_KEY is your Mailgo account credential. Keep it secure and never share it publicly.

Compliance

This skill sends emails to recipient lists you provide. You are responsible for ensuring your campaigns comply with applicable laws and platform terms, including:

  • CAN-SPAM Act (US) — include a physical address and honor opt-out requests
  • GDPR (EU) — ensure you have a lawful basis for contacting recipients
  • Mailgo Terms of Service — https://app.mailgo.ai

The skill's built-in email optimizer adds a soft opt-out line to every email by default.

Directory Structure

mailgo-cold-mail-marketing/
├── .claude-plugin/                 # Claude Code plugin
│   ├── plugin.json
│   └── marketplace.json
├── .cursor-plugin/                 # Cursor IDE plugin
│   └── plugin.json
├── .codex/                         # GitHub Codex support
│   └── INSTALL.md
├── .opencode/                      # OpenCode support
│   └── INSTALL.md
├── skills/
│   └── mailgo-campaign-suite/
│       └── SKILL.md                # Main skill instructions
├── scripts/
│   ├── verify_emails.py            # Step 1: Email verification
│   ├── claim_free_mailbox.py       # Step 2: Free mailbox claiming
│   ├── run_campaign.py             # Step 4: Campaign creation & activation
│   ├── campaign_control.py         # Step 5: Lifecycle management
│   └── campaign_report.py          # Step 6: Statistics & reporting
├── resources/
│   ├── spam-triggers.md            # Step 3: Spam trigger replacement table
│   └── industry-templates.md       # Step 3: Industry-specific email templates
├── gemini-extension.json           # Gemini CLI extension
├── GEMINI.md                       # Gemini context pointer
├── package.json                    # Package metadata (OpenCode entry)
└── README.md                       # This file

Scripts Reference

ScriptPurposeKey Args
verify_emails.pySubmit + poll email verificationemails..., --file, --email-column
claim_free_mailbox.pyClaim pre-warmed mailbox--json, --api-key
run_campaign.pyFull campaign creation flow--sender, --subject, --body/--body-file, --recipients/--recipients-file
campaign_control.pyActivate/pause/delete/listactivate/pause/delete/list/info
campaign_report.pyView campaign statisticsoverview/rounds/daily, --json

Relationship to Other Mailgo Skills

This suite consolidates functionality from:

  • 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)

Those individual skills remain available for standalone use. This suite provides the same capabilities in a single, self-contained package.