How to integrate Mailcoach MCP with Hermes

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Introduction

Hermes is a 24/7 autonomous agent that lives on your computer or server — it remembers what it learns and evolves as your usage grows.

This guide explains the easiest and most robust way to connect your Mailcoach account to Hermes. You can do this through either Composio Connect CLI or Composio Connect MCP. For personal use we recommend the CLI, but you won't go wrong with MCP either.

Also integrate Mailcoach with

What is Composio Connect?

Composio Connect is a consumer offering that lets anyone plug 1,000+ applications directly into their agent harness — including Hermes. It can:

  • Search and load tools from relevant toolkits on-demand, reducing context usage.
  • Chain multiple tools to accomplish complex workflows via a remote workbench, without excessive back-and-forth with the LLM.
  • Manage app authentication end-to-end with zero manual overhead.

Integrating Mailcoach with Hermes

Using Composio Connect CLI

1. Install the Composio CLI

Run the install script directly, or paste https://composio.dev/hermes into your Hermes chat box to have it installed for you.

bash
curl -fsSL https://composio.dev/install | bash
Hermes authenticating with Composio

2. Authenticate

Once the CLI is installed, ask Hermes to authenticate with Composio.

3. Connect to Mailcoach

Ask your agent to connect to Mailcoach, or simply request any Mailcoach-related task. Hermes will prompt you to authenticate and authorize access.

4. Done. You're all set with a new Mailcoach connection.

Using Composio Connect MCP

1. Get your MCP URL and API Key

Go to dashboard.composio.dev and copy your Connect MCP URL and API key.

Copy MCP URL and API key from Composio dashboard

2. Open the Hermes config file

bash
nano ~/.hermes/config.yaml

3. Add the Composio Connect MCP server

bash
mcp_servers:
  composio:
    url: "https://connect.composio.dev/mcp"
    headers:
      x-consumer-api-key: "YOUR_COMPOSIO_API_KEY"
    connect_timeout: 60
    timeout: 180

Save with Ctrl + O, Enter, then exit with Ctrl + X.

4. Restart your Hermes agent

Once restarted, ask your agent to connect to Mailcoach or request any Mailcoach-related task. It will prompt you to authenticate and authorize access.

5. Done!

What is the Mailcoach MCP server, and what's possible with it?

The Mailcoach MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Mailcoach account. It provides structured and secure access to your email marketing platform, so your agent can manage campaigns, organize subscriber lists, create templates, and automate email workflows on your behalf.

  • Email campaign creation and scheduling: Direct your agent to launch new campaigns, send emails to specific lists, or set up campaign schedules based on your marketing needs.
  • Subscriber list and segmentation management: Let your agent create new email lists, add or confirm subscribers, and apply tags for better audience segmentation and targeting.
  • Template management and customization: Instruct your agent to create, update, or organize reusable email templates and transactional templates for efficient campaign building.
  • Automated suppression and bounce handling: Have your agent add suppressions for bounced or blocked addresses, keeping your lists clean and compliant with deliverability best practices.
  • Bulk subscriber import and data enrichment: Enable your agent to import subscribers via CSV, append new data to existing imports, and streamline growth of your contact lists.

Supported Tools & Triggers

Tools
Add Mailcoach CampaignTool to create a new Mailcoach campaign.
Add Email ListTool to create a new email list.
Add suppressionTool to add a suppression entry.
Add Tag to Email ListTool to create a new tag within a specific email list.
Add Tags to SubscriberAdd tags to a subscriber for segmentation and targeting.
Add Transactional Email TemplateCreates a new email template in Mailcoach via POST /api/templates.
Append to Subscriber ImportTool to append CSV data to an existing subscriber import.
Confirm SubscriberConfirm a subscriber's subscription to an email list (double opt-in confirmation).
Create Segment for Email ListTool to create a new segment within an email list.
Create Subscriber ImportCreates a new subscriber import in Mailcoach.
Delete CampaignTool to delete a campaign by UUID.
Delete Email ListTool to delete an email list by UUID.
Delete Segment from Email ListTool to delete a segment from an email list.
Delete SubscriberPermanently delete a subscriber by UUID from Mailcoach.
Delete Subscriber ImportTool to delete a subscriber import by its UUID.
Delete SuppressionTool to delete a suppression entry by UUID.
Delete Tag from Email ListTool to delete a tag from an email list.
Delete TemplateTool to delete a template by UUID.
Delete Transactional MailTool to delete a transactional mail send record by its UUID.
Get All CampaignsTool to retrieve all campaigns.
Get All Sent ItemsTool to retrieve all sent items.
Get All Subscriber ImportsTool to retrieve all subscriber imports.
Get All SuppressionsRetrieve a paginated list of all email suppression entries from Mailcoach.
Get All TagsTool to retrieve all tags for a specific email list.
Get All TemplatesTool to retrieve all templates.
Get All Transactional Email TemplatesTool to retrieve all transactional email templates.
Get Campaign BouncesTool to retrieve bounced subscribers of a sent campaign with pagination support.
Get Campaign ClicksTool to retrieve clicks from a sent campaign with pagination support.
Get Campaign OpensTool to retrieve all opens for a sent campaign with pagination support.
Get Campaign UnsubscribesTool to retrieve unsubscribes from a sent campaign with pagination support.
Get Email ListsTool to retrieve all email lists.
Get SegmentTool to retrieve details of a specific segment.
Get Specific CampaignTool to retrieve details of a specific Mailcoach campaign.
Get Specific Email ListRetrieve detailed information about a specific Mailcoach email list by its UUID.
Get Specific SubscriberTool to retrieve a specific subscriber.
Get Specific SuppressionTool to retrieve a specific suppression entry.
Get Specific TagTool to retrieve details of a specific tag.
Get Specific TemplateRetrieves the full details of a specific Mailcoach email template by its UUID.
Get Subscriber ImportTool to retrieve details of a specific subscriber import by UUID.
Get Transactional MailTool to retrieve details of a specific transactional email by its UUID.
Get UserTool to retrieve details of the currently authenticated user.
List SegmentsTool to retrieve all segments for a specific email list.
List SubscribersTool to list all subscribers from a specific email list with pagination support.
List Transactional MailsTool to retrieve all transactional email records.
Remove Tags from SubscriberTool to remove tags from a subscriber.
Resend Subscriber ConfirmationTool to resend confirmation email to a subscriber.
Start Subscriber ImportStarts processing a subscriber import that is in 'draft' status.
Subscribe To Email ListSubscribe (or update) a subscriber to an email list.
Unsubscribe SubscriberUnsubscribe a subscriber from their email list in Mailcoach.
Update CampaignTool to update an existing Mailcoach campaign.
Update Email ListTool to update an existing email list.
Update SegmentTool to update an existing segment within an email list.
Update SubscriberTool to update a subscriber.
Update Subscriber ImportTool to update an existing subscriber import.
Update TagTool to update an existing tag within an email list.
Update TemplateUpdates an existing email template in Mailcoach.

Way Forward

With Mailcoach connected, Hermes can now act on your behalf whenever it detects a relevant task or you ask it to.

From here, you can extend Hermes further:

  • Connect more apps: Calendar, Slack, Notion, Linear, and hundreds of others are available through the same Composio Connect setup. Each new integration compounds what Hermes can do for you.
  • Build workflows across tools: Once multiple apps are connected, Hermes can chain actions together — turn an email into a calendar invite, a Slack message into a Linear ticket, or a meeting note into a follow-up draft.
  • Let it learn your patterns: The more you use Hermes, the better it gets at anticipating how you'd handle recurring tasks. Give it feedback on drafts and decisions, and it will adapt.

If you run into trouble or want to share what you've built, join the community or check out the Docs for deeper configuration options.

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FAQ

What are the differences in Tool Router MCP and Mailcoach MCP?

With a standalone Mailcoach MCP server, the agents and LLMs can only access a fixed set of Mailcoach tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Mailcoach and many other apps based on the task at hand, all through a single MCP endpoint.

Can I use Tool Router MCP with Hermes?

Yes, you can. Hermes fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Mailcoach tools.

Can I manage the permissions and scopes for Mailcoach while using Tool Router?

Yes, absolutely. You can configure which Mailcoach scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

How safe is my data with Composio Tool Router?

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Mailcoach data and credentials are handled as safely as possible.

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