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

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Setup

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

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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.

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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.

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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.

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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.

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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)

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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.

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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

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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

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