Mailchimp

Email marketing platform for campaigns, automation, and audience management.

Capabilities

Integration	Available	Notes
API	✓	Marketing API for campaigns, audiences, automation
MCP	✓	Available via Mailchimp MCP server
CLI	-	Not available
SDK	✓	Official SDKs for multiple languages

Authentication

• Type: API Key or OAuth 2.0
• Header: Authorization: Bearer {api_key} or Authorization: apikey {api_key}
• Base URL: https://{dc}.api.mailchimp.com/3.0/ (dc = datacenter from API key)

Common Agent Operations

List audiences (lists)

GET https://{dc}.api.mailchimp.com/3.0/lists

Get audience members

GET https://{dc}.api.mailchimp.com/3.0/lists/{list_id}/members?count=100

Add subscriber

POST https://{dc}.api.mailchimp.com/3.0/lists/{list_id}/members

{
  "email_address": "user@example.com",
  "status": "subscribed",
  "merge_fields": {
    "FNAME": "John",
    "LNAME": "Doe"
  }
}

Update subscriber

PATCH https://{dc}.api.mailchimp.com/3.0/lists/{list_id}/members/{subscriber_hash}

{
  "merge_fields": {
    "FNAME": "Jane"
  },
  "tags": ["customer", "premium"]
}

Get campaigns

GET https://{dc}.api.mailchimp.com/3.0/campaigns?count=20

Get campaign report

GET https://{dc}.api.mailchimp.com/3.0/reports/{campaign_id}

Create campaign

POST https://{dc}.api.mailchimp.com/3.0/campaigns

{
  "type": "regular",
  "recipients": {
    "list_id": "{list_id}"
  },
  "settings": {
    "subject_line": "Your Subject",
    "from_name": "Your Name",
    "reply_to": "reply@example.com"
  }
}

Send campaign

POST https://{dc}.api.mailchimp.com/3.0/campaigns/{campaign_id}/actions/send

List automations

GET https://{dc}.api.mailchimp.com/3.0/automations

Key Metrics

Campaign Report Fields

• emails_sent - Total sent
• opens - Open count
• unique_opens - Unique opens
• open_rate - Open rate
• clicks - Click count
• click_rate - Click rate
• unsubscribes - Unsubscribe count
• bounces - Bounce count

Subscriber Hash

Calculate subscriber hash for updates:

const hash = md5(email.toLowerCase());

Subscriber Statuses

• subscribed - Active subscriber
• unsubscribed - Unsubscribed
• cleaned - Hard bounce
• pending - Awaiting confirmation
• transactional - Transactional only

When to Use

• Managing email lists and subscribers
• Creating and sending email campaigns
• Setting up email automation
• Analyzing campaign performance
• Segmenting audiences
• A/B testing emails

Rate Limits

• 10 concurrent connections
• 10 requests per second
• Batch endpoints for bulk operations

Relevant Skills

• email-sequence
• analytics-tracking
• referral-program