# MailerLite

**Canonical:** https://apis.io/providers/mailerlite/  
**Website:** https://www.mailerlite.com/  
**APIs profiled:** 9

MailerLite is an email marketing and automation platform used by creators, e-commerce sellers and small businesses to build lists, send campaigns and run behavioural automations. The current REST API at connect.mailerlite.com exposes subscribers, groups, segments, custom fields, campaigns, automations, forms, webhooks, batching, and a full e-commerce surface (shops, products, categories, customers, orders, carts) that drives abandoned-cart and post-purchase automations. Authentication is a bearer API key minted in the dashboard; responses are cursor-paginated and the API version can be pinned with an X-Version date header. Alongside the REST API, MailerLite ships six official SDKs, a first-party Go CLI with an interactive TUI, a published Agent Skill, and a hosted OAuth-protected MCP server at mcp.mailerlite.com exposing roughly 76 tools to AI assistants. A legacy Classic API v2 still serves older accounts.

## Kin Score — 77.6 / 100 (exemplar)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 77.6).

| Facet | Score |
|---|---|
| Discoverability | 92.6 |
| Contract Quality | 62.3 |
| Governance | 41.7 |
| Contract Governance | 41.7 |
| Operational Transparency | 57.9 |
| Developer Ergonomics | 78.6 |
| Commercial Clarity | 100.0 |
| Access Clarity | 100.0 |

Regulatory layer — **Telecommunications**: 59.7 (matched via tags).

## Agent readiness — 44.7 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | derived |
| Agent Skills | yes |
| Well Known Catalog | no |
| Consent Identity | yes |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (9)

- **MailerLite Classic API (Legacy)** — The MailerLite Classic API serves legacy MailerLite Classic accounts. New integrations should target the current API at connect.mailerlite.com. Corrected 2026-08-13: the Classic...
- **MailerLite Automations API** — The Automations API from MailerLite — 1 operation(s) for automations.
- **MailerLite Campaigns API** — The Campaigns API from MailerLite — 2 operation(s) for campaigns.
- **MailerLite Fields API** — The Fields API from MailerLite — 1 operation(s) for fields.
- **MailerLite Forms API** — The Forms API from MailerLite — 1 operation(s) for forms.
- **MailerLite Groups API** — The Groups API from MailerLite — 2 operation(s) for groups.
- **MailerLite Segments API** — The Segments API from MailerLite — 1 operation(s) for segments.
- **MailerLite Subscribers API** — The Subscribers API from MailerLite — 4 operation(s) for subscribers.
- **MailerLite Webhooks API** — The Webhooks API from MailerLite — 2 operation(s) for webhooks.

## MCP servers (2)

- **MailerLite MCP Server**
- **MCP Server Manifest**

## Agentic access (1)

- **Mailerlite Agentic Access** — 21 operations · 10 acting

## Security (4)

- **Mailerlite Authentication** — http/oauth2 · 3 schemes
- **Mailerlite Domain Security** — TLSv1.3 · DMARC
- **Mailerlite Vulnerability Disclosure** — Hackerone · contact published
- **Mailerlite Trust Center** — ISO/IEC 27001:2022, PCI DSS, GDPR, EU-U.S. Data Privacy Framework, Swiss-U.S. Data Privacy Framework, UK Extension to the EU-U.S. Data Privacy Framework

## Plans (1)

- **Mailerlite Plans Pricing**

## Tags

Email Marketing, Automation, Newsletters, Subscribers, Campaigns, Webhook, E-Commerce, Segmentation, Transactional Email, MCP

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/mailerlite/). Scores are computed from the provider's own public artifacts under a published rubric.