MailerLite Automation

Automate email marketing operations -- manage subscribers, analyze campaign performance, organize groups and segments, and monitor account health -- all orchestrated through the Composio MCP integration.

Toolkit docs: composio.dev/toolkits/mailerlite

Setup

Connect your MailerLite account through the Composio MCP server at https://rube.app/mcp
The agent will prompt you with an authentication link if no active connection exists
Once connected, all MAILERLITE_* tools become available for execution

Core Workflows

1. Verify Account & Fetch Metadata

Retrieve account details including plan limits and timezone to ensure consistent reporting.

Tool: MAILERLITE_GET_ACCOUNT_INFO

No parameters required -- returns account metadata, plan details, and timezone configuration.

Always run this first to establish plan constraints and timezone for consistent time-windowed queries.

2. Get Account-Wide Performance Stats

Retrieve aggregate subscriber counts, sent email totals, and engagement metrics for a health snapshot.

Tool: MAILERLITE_GET_ACCOUNT_STATS

No parameters required -- returns overall subscriber counts, sent emails, and performance metrics.

3. List & Paginate Subscribers

Retrieve subscribers with optional status filtering and cursor-based pagination.

Tool: MAILERLITE_GET_SUBSCRIBERS

| Parameter | Type | Required | Description | |-----------|------|----------|-------------| | filter[status] | string | No | Filter by: active, unsubscribed, unconfirmed, bounced, junk | | limit | integer | No | Subscribers per page (default: 25) | | cursor | string | No | Pagination cursor from previous response meta.cursor | | include | string | No | Set to groups to include group memberships |

Important: Loop with meta.next_cursor until null to build a complete subscriber list.

4. List & Analyze Campaigns

Retrieve campaigns with optional status/type filters and page-based pagination.

Tool: MAILERLITE_GET_CAMPAIGNS

| Parameter | Type | Required | Description | |-----------|------|----------|-------------| | filter[status] | string | No | Filter by: sent, draft, ready | | filter[type] | string | No | Filter by: regular, ab, resend, rss | | limit | integer | No | Items per page (default: 25) | | page | integer | No | Page number (default: 1) |

Important: Paginate using meta.last_page to avoid omitting campaigns from historical analysis.

5. Manage Subscriber Groups

List, filter, and sort subscriber groups for audience organization.

Tool: MAILERLITE_GET_GROUPS

| Parameter | Type | Required | Description | |-----------|------|----------|-------------| | filter[name] | string | No | Partial name match filter | | limit | integer | No | Max groups to return | | page | integer | No | Page number (starting from 1) | | sort | string | No | Sort by: name, total, open_rate, click_rate, created_at (prefix - for descending) |

6. Retrieve Audience Segments & Custom Fields

Fetch segments and custom field definitions for advanced audience analysis.

Tools: MAILERLITE_GET_SEGMENTS and MAILERLITE_GET_FIELDS

Segments:

| Parameter | Type | Required | Description | |-----------|------|----------|-------------| | limit | integer | No | Max segments to return (max 250) | | page | integer | No | Page number (starting from 1) |

Fields: No parameters required -- returns all custom field definitions.

Known Pitfalls

| Pitfall | Details | |---------|---------| | Subscriber pagination is cursor-based | MAILERLITE_GET_SUBSCRIBERS uses meta.next_cursor -- you must loop until null or counts will be incomplete | | Campaign pagination is page-based | MAILERLITE_GET_CAMPAIGNS uses page/limit with meta.last_page -- stopping early omits campaigns and distorts trends | | Sampling bias | Computing engagement metrics from only the first page introduces bias; always aggregate across all pages | | Nested response shape | MailerLite payloads are nested under results[i].response.data with data and meta subkeys, not a flat data key -- parse accordingly | | API quotas | Subscriber listing is limited by MailerLite Connect API quotas -- plan batch operations accordingly |

Quick Reference

| Tool Slug | Purpose | |-----------|---------| | MAILERLITE_GET_ACCOUNT_INFO | Verify auth and review account metadata | | MAILERLITE_GET_ACCOUNT_STATS | Get aggregate performance metrics | | MAILERLITE_GET_SUBSCRIBERS | List subscribers with filtering and pagination | | MAILERLITE_GET_CAMPAIGNS | List campaigns with status/type filters | | MAILERLITE_GET_GROUPS | List and sort subscriber groups | | MAILERLITE_GET_SEGMENTS | List audience segments | | MAILERLITE_GET_FIELDS | Retrieve custom field definitions |