📬 Gmail MCP Agent

An open-source, plug-and-play toolkit for running personalized Gmail outreach and automated follow-ups — controllable over the Model Context Protocol (MCP) so you can drive it from any MCP-compatible client or run it as a 24/7 background service.

Everything that's specific to a campaign — sender identity, subject lines, email copy, and your contact list — lives in config files and the templates/ directory. The code itself ships with no business, industry, or personal data baked in. Clone it, drop in your credentials, edit a few text files, and go.

⚠️ Send responsibly. Only email people who have agreed to hear from you, honor unsubscribe/opt-out requests, respect Gmail's sending limits, and comply with anti-spam laws (e.g. CAN-SPAM, GDPR, CASL) in your jurisdiction.

📑 Contents

• Features

• How it works

• Project structure

• Quick start

• MCP server

• Configuration reference

• Deployment

• Security & privacy

• More docs

• Contributing

• License

Related MCP server: Customer Reminder MCP

✨ Features

• CSV-driven outreach — send templated, personalized emails to a contact list.

• Automated follow-up sequences — configurable timing (default: day 3 and day 7).

• Response tracking — incremental, idempotent Gmail sync detects replies.

• Keyword-based lead scoring — categorize replies as interested / not interested.

• Auto-replies — optionally respond to interested leads automatically.

• MCP server — start/stop/monitor the agent from any MCP client.

• Runs anywhere — locally, via Docker, or as a systemd service.

🧭 How it works

                    ┌──────────────────┐
   MCP client  ───► │    mcp_server    │ ──► start / stop / status / report
 (Claude, CLI)      └────────┬─────────┘
                             │ drives
                             ▼
   contacts.csv ──► ┌──────────────────┐ ──► personalized emails ──┐
   templates/   ──► │  lead_nurturer   │                           ▼
   config       ──► └────────┬─────────┘                    ┌────────────┐
                             │  reads replies, scores leads  │  Gmail API │
                             └───────────────────────────────┤  (OAuth2)  │
                                                             └────────────┘

1. Outreach — send_from_csv.py sends your body.txt template to each row in contacts.csv, rate-limited and logged.

2. Listen — each cycle, lead_nurturer.py checks Gmail for replies (incrementally, never reprocessing a message) and scores them against your keywords.

3. Follow up — leads who haven't replied get follow-ups on your schedule; interested leads optionally get an auto-reply.

4. Control — run it once, on a scheduler, or as an MCP server you drive from any MCP client.

📁 Project structure

├── send_from_csv.py          # One-shot CSV email sender (initial outreach)
├── lead_nurturer.py          # Follow-up sequences, response tracking, scoring
├── mcp_server.py             # MCP server exposing control tools
├── mcp_client.py             # Simple CLI client for the MCP server
├── lead_dashboard.py         # Prints a status dashboard
├── run_nurturing.py          # Standalone scheduler (no MCP needed)
├── templates/                # Your email copy (Jinja2) — edit these
│   ├── initial.txt
│   ├── followup_1.txt
│   ├── followup_2.txt
│   └── interested.txt
├── contacts.csv              # Sample contact list — replace with your own
├── body.txt                  # Body template for send_from_csv.py
├── nurturing_config.json     # Sender identity, schedule, scoring, automation
├── credentials.example.json  # Template for your Gmail OAuth client
├── env.example               # Template for environment variables
├── Dockerfile / docker-compose.yml / deploy.sh
└── gmail-mcp-agent.service   # systemd unit template

Files generated at runtime (git-ignored): token.json, lead_tracking.json, gmail_sync_state.json, send_log.csv, mcp_server.log.

🚀 Quick start

Prerequisites: Python 3.11+, a Google account, and (optionally) Docker.

1. Install

git clone https://github.com/brandononchain/GMAIL-MCP-Agent.git
cd GMAIL-MCP-Agent
pip install -r requirements.txt

2. Get Gmail API credentials

1. Open the Google Cloud Console and create (or select) a project.

2. Enable the Gmail API.

3. Create an OAuth client ID of type Desktop app.

4. Download the JSON and save it as credentials.json in the project root. (See credentials.example.json for the expected shape.)

The first time you run a command, a browser window opens for you to authorize access; a token.json is then cached locally for reuse.

3. Configure your campaign

• nurturing_config.json — set sender_name, company_name, follow-up timing, scoring, and automation toggles. Leave sender_email blank to use the address of the authenticated Gmail account.

• templates/ — edit initial.txt, followup_1.txt, followup_2.txt, and interested.txt. They're Jinja2 templates; any CSV column is available (e.g. {{ first_name }}, {{ company }}), plus {{ sender_name }} and {{ company_name }}.

• contacts.csv — replace the sample rows with your list. A to column is required; first_name and company are optional but used for personalization.

4. Send your initial outreach

# Send the body.txt template to everyone in contacts.csv
python send_from_csv.py contacts.csv --subject "Quick question" --body_file body.txt

5. Run automated nurturing

# One cycle: check for replies, send any due follow-ups, print a report
python lead_nurturer.py

# Or keep it running on a schedule (interval from config)
python run_nurturing.py

🤖 MCP server

Run the agent as an MCP server so any MCP-compatible client can control it:

python mcp_server.py

It exposes these tools:

A minimal CLI client is included:

python mcp_client.py start 4      # start, every 4 hours
python mcp_client.py status
python mcp_client.py report
python mcp_client.py test you@example.com
python mcp_client.py stop

To register the server with an MCP client (e.g. Claude Desktop), point it at python /absolute/path/to/mcp_server.py.

⚙️ Configuration reference

{
  "sender_email": "",            // blank = use the authenticated Gmail account
  "sender_name": "Your Name",
  "company_name": "Your Company",
  "contacts_file": "contacts.csv",
  "templates_dir": "templates",
  "subjects": {                  // Jinja2 subject lines per stage
    "followup_1": "Following up, {{ first_name }}",
    "followup_2": "One last note",
    "interested": "Re: Great to hear from you"
  },
  "follow_up_schedule": {
    "followup_1_days": 3,
    "followup_2_days": 7,
    "max_follow_ups": 2
  },
  "response_keywords": {
    "interested": ["interested", "yes", "demo", "call"],
    "not_interested": ["not interested", "no thanks", "stop", "unsubscribe"]
  },
  "lead_scoring": {
    "response_bonus": 10,
    "interest_bonus": 5,
    "follow_up_penalty": -1
  },
  "automation": {
    "check_responses_interval_hours": 4,
    "auto_respond_to_interest": true,
    "auto_send_follow_ups": true
  }
}

Environment variables (see env.example) configure send_from_csv.py — credentials/token paths, default sender, rate limiting (PER_MINUTE), and the log file.

🚢 Deployment

Docker (recommended):

./deploy.sh                 # build + run with docker-compose
# or
docker-compose up -d

docker-compose.yml mounts your credentials.json, contacts.csv, body.txt, templates/, and nurturing_config.json into the container, so you can edit copy without rebuilding.

systemd: edit the paths/user in gmail-mcp-agent.service, then:

sudo cp gmail-mcp-agent.service /etc/systemd/system/
sudo systemctl enable --now gmail-mcp-agent

🔒 Security & privacy

• OAuth2 is used for Gmail access — no passwords are stored.

• credentials.json, token.json, .env, and all runtime state files are git-ignored. Never commit them.

• All data stays local; nothing is sent to third parties.

📚 More docs

• SETUP.md — step-by-step setup

• NURTURING_README.md — how nurturing & scoring work

• DEPLOYMENT_GUIDE.md — production deployment & ops

• templates/README.md — writing email templates

🤝 Contributing

Contributions are welcome — open an issue or submit a pull request.

📄 License

Released under the MIT License.