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

MailerLite Automation

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