How to connect Constant Contact to Claude

Connect Claude Web, Desktop and Cowork to Constant Contact MCP. Create newsletter draft for new subscribers, list contacts added this week, and more using natural language, with authentication handled for you.

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Constant Contact is an email marketing and automation platform for small businesses. It helps teams build campaigns, manage contacts, and grow customer relationships.

93 Tools

Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your Constant Contact account to Claude via Composio Connect, enabling it to create newsletter draft for new subscribers, list contacts added this week, segment inactive Constant Contact subscribers, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

Also integrate Constant Contact with

Connecting Constant Contact to Claude Web, Desktop, and Cowork

Two ways to add the Composio connector. Pick whichever you prefer.

1. Add with one click

Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.

Add to Claude

Add manually

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

2. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Web, Desktop, and Cowork

3. Connect your Constant Contact account

Back in Claude, ask it to connect to Constant Contact or give it any Constant Contact-related task.

For example, ask Claude to:

  • "Create newsletter draft for new subscribers"
  • "List contacts added this week"
  • "Segment inactive Constant Contact subscribers"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Claude, and your Constant Contact account is ready to use.

What is the Constant Contact Claude Connector, and what's possible with it?

The Constant Contact MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Constant Contact account. It provides structured and secure access to your contacts, contact lists, email campaigns, and events, so your agent can create contacts, organize lists, create campaigns, and manage events on your behalf.

  • Contact management: Have your agent create new contacts, retrieve existing contact details, update contact information, or list contacts in your account.
  • Contact list organization: Let the agent create contact lists and review your existing lists to help organize audiences.
  • Email campaign creation: Direct your agent to create new email campaigns and list existing campaigns for easy reference.
  • Event creation: Instruct your agent to create new events with default settings for upcoming activities.
  • Event retrieval: Have your agent list your events or retrieve the details of a specific event.

Troubleshooting

1. Why does Claude not use the Composio connector for Constant Contact?

The connector can show as connected, but Claude must use it in each Constant Contact conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to Constant Contact again.

2. Why does Claude show an MCP server error before Constant Contact connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Constant Contact.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect Constant Contact.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the Constant Contact authorization link not work?

The Composio connector is one server. Your Constant Contact account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the Constant Contact connection.
  • Composio creates a fresh Constant Contact authorization link.
  • Open that link in your browser and finish the Constant Contact sign-in.

4. Why do Constant Contact actions fail after they worked before?

The Constant Contact connection can expire or lose permission.

  • Ask Claude to inspect the Constant Contact connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the Constant Contact account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in Constant Contact.
  • If the action still fails with a permission error, check that the connected account has that permission in Constant Contact itself.

5. How do I switch to a different Constant Contact account?

Claude can manage the Constant Contact connection for you.

  • Ask Claude to disconnect or delete the current Constant Contact account.
  • Ask Claude to connect Constant Contact again.
  • Open the new Composio authorization link for Constant Contact.
  • Sign in with the other Constant Contact account in the browser.
  • After the account connects, ask Claude to retry the Constant Contact task.

6. Why is my Constant Contact connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your Constant Contact connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If Constant Contact tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect Constant Contact.
TOOLS

Supported Tools

Every Constant Contact action and event your agent gets out of the box.

Add Account Email Address

Add a new email address to a Constant Contact account.

Add Contact Taggings

Add Tags to Contacts.

Add list memberships

Add Contacts to Lists creates an activity to add contacts to one or more contact lists.

Copy Event

POST (copy) an existing event in Constant Contact.

Count Contact Consents

GET contact consent counts for a Constant Contact account.

Create Contact

Create a new contact in Constant Contact with a unique email address, optionally including name, phone numbers, addresses, and list or tag assignments.

Create contact from sign-up form

Create or update a contact through a sign-up form submission, matching by email address.

Create Contact List

Create a new contact list in Constant Contact.

Create contact tag

POST (Create) a Tag.

Create Custom Field

Create a new custom field for contacts in Constant Contact.

Create Email Campaign

Create a new email campaign in Constant Contact.

Create Event

Create a new event with default settings in Constant Contact.

Create Resend to Non-openers

Create a resend to non-openers activity for a primary email campaign activity, with a required resend subject and an optional delay in days or minutes.

Create Social Post

Create a new social media post campaign.

Delete contact

DELETE a specific contact from your Constant Contact account.

Delete Contact List

Permanently deletes a contact list by ID in Constant Contact without deleting its member contacts.

Create contact delete activity

Delete multiple contacts in bulk by submitting a contact_delete activity.

Delete contact tag

Delete a specific contact tag from your Constant Contact account.

Delete contact tags

Delete one or more contact tags from the Constant Contact account in bulk.

Delete custom field

DELETE a specific contact custom field from your Constant Contact account.

Delete custom fields

Delete one or more custom fields from a Constant Contact account.

Delete Email Campaign

DELETE an Email Campaign from your Constant Contact account.

Delete contact list activity

Delete one or more contact lists from your Constant Contact account by submitting a list delete activity.

Delete Segment

Delete a Constant Contact segment by ID without deleting its member contacts.

Export Contacts

Create a bulk activity that exports contacts to a CSV file.

Get account physical address

GET the Physical Address for the Account.

Get account summary

GET a summary of account details for a Constant Contact account.

Get activity status

GET the status of a specific bulk activity.

Get contact

GET a contact by their unique ID.

Get contact activity summary report

GET contact tracking activity summary for a specific contact.

Get Contact List

GET details for a specific contact list by its ID.

Get Contact Open and Click Rates Report

GET average open and click rates for a contact.

Get Contacts Export File

Retrieve the exported contacts file from a completed export contacts activity.

Get Contact SMS Engagement History

GET SMS Engagement History for a Contact.

Get contact tag details

GET Tag Details - Retrieves detailed information about a specific contact tag.

Get custom field

GET a custom field by its unique ID.

Get email campaign details

GET details for a single email campaign using its campaign ID.

Get Email Campaign Activity

GET details for a specific email campaign activity by its ID.

Get email campaign activity preview

GET the HTML Preview of an Email Campaign Activity.

Get Email Campaign Activity Schedule

GET an email campaign activity schedule.

Get email campaign activity send history

Retrieve the send history of an email campaign activity, including send dates, contact counts, recipient lists or segments, and send status.

Get email campaign ID cross-references

GET a collection of V2 and V3 API Email Campaign ID cross-references.

Get Email Campaign Statistics Report

GET statistics for one or more email campaigns.

Get Event

Retrieve a single Constant Contact event by ID.

Get list ID cross-references

GET a collection of V2 and V3 API List IDs cross-references.

Get Partner Webhook Subscription

GET details for a specific Partner Webhook Topic Subscription by its ID.

Get resend to non-openers

GET Details for a Resend to Non-openers Campaign Activity.

Get Segment

GET details for a specific segment by its unique ID.

Import contacts from CSV file

Import contacts from a CSV file into Constant Contact lists as an asynchronous activity.

Import contacts from JSON

Bulk import contacts into Constant Contact using JSON format.

List account email addresses

GET a Collection of Account Email Addresses.

List account user privileges

Get the user privileges associated with your access token.

List activity statuses

List a page of bulk activities, optionally filtered by processing, completed, cancelled, failed, or timed_out status.

List Contact Lists

Retrieve a page of Constant Contact lists, optionally filtering by name or status and including membership counts.

List contacts

Retrieve a page of contacts from Constant Contact, with optional filters for status, email, lists, segments, tags, or update date.

List contact tags

Retrieve a page of contact tags for the Constant Contact account, with optional contact counts.

List contact custom fields

Retrieve a page of contact custom field definitions, including labels, types, and available choices.

List Email Campaigns

List the first page of email campaigns, with optional creation-date filters and a page-size limit.

List Email Campaign Summaries Report

Retrieve the first page of the email campaign summary report, including unique activity counts and aggregate percentage rates for campaigns on that page.

List Email Did Not Opens Report

GET an Email Did Not Opens Report to retrieve a list of contacts who did not open a specific email campaign.

List email forwards report

GET an Email Forwards Report for a specific email campaign activity.

List email opt-outs report

GET an Email Opt-outs Report for a specific email campaign activity.

List Email Unique Opens Report

GET an email unique opens report for a campaign activity.

List Events

Retrieve a page of events from a Constant Contact account, optionally filtered by status.

List event track registrations

GET registrations for an event track to retrieve a list of registrations.

List Landing Page Contact Opens Report

Retrieve a contact opens report for a landing page campaign activity, optionally filtering contacts by name or email.

List Landing Page Unique Contact Adds Report

GET a Unique Contacts Adds Landing Page Report for a specific landing page campaign activity.

List Landing Page Unique Contact Clicks Report

GET unique contact clicks data for a landing page campaign.

List Landing Page Unique Contact Opens Report

GET a Unique Contacts Opens Landing Page Report to retrieve a list of contacts who uniquely opened a specific landing page campaign.

List landing page unique contact updates report

GET a Unique Contacts Updates Landing Page Report for a specific landing page campaign activity.

List Segments

List a page of segments in a Constant Contact account, optionally sorted by date, name, or segment ID.

List SMS Campaign Summaries Report

Get an SMS campaign summaries report for a specified date range.

List Social Connections

GET social network connections for a Constant Contact account.

List Social Hashtag Groups

GET hashtag groups - Retrieves a paginated list of social hashtag groups.

List Social Profiles

GET social media profiles from Constant Contact.

Remove Contact Tagging

Remove tagging from contacts in Constant Contact.

Remove Tags from Contacts

Remove tags from contacts in Constant Contact.

Remove contacts from lists

Create a Remove Contacts from Lists activity to remove contacts from one or more lists.

Rename Email Campaign

PATCH (Update) the name of an existing email campaign in Constant Contact.

Rename Segment

PATCH (rename) an existing segment in Constant Contact.

Resubscribe Contact

Resubscribe an unsubscribed contact to one or more contact lists.

Undo Event Ticket Check-In

Undo check-in for event tickets identified by their order ticket keys.

Update Account Details

Update account summary details for the authenticated account, including the owner's contact information, organization name, country and state, time zone, and website.

Update Account Physical Address

PUT (update) the Physical Address for an Account.

Update Contact

Update an existing Constant Contact contact by ID using provided details such as name, email address, phone numbers, addresses, or list and tag assignments.

Update Contact List

Update an existing Constant Contact list by ID, supplying its name and optionally its description or favorite status.

Update Contact Tag

PUT (Update) a Tag.

Update Custom Field

Update an existing contact custom field in Constant Contact.

Update Email Campaign Activity

Update an email campaign activity by ID, including its content, subject, sender information, and recipient lists.

Update Event

Update an existing Constant Contact event by PATCH, supplying the event details to change, such as name, description, dates, location, or status.

Update Event Track Registration Payment Status

Update the payment status for event track registrations in Constant Contact.

Update Event Track Registrations

PUT (update) registration status for event track registrations.

Update Segment

PUT (update) an existing segment in Constant Contact.

FRAMEWORKS

How to build Constant Contact MCP Agent with another framework

FAQ

Frequently asked questions

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

Yes, you can. Claude Cowork 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 Constant Contact tools.

Yes, absolutely. You can configure which Constant Contact 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.

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 Constant Contact data and credentials are handled as safely as possible.

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