# Mailercloud AI integration on Definable

> Powerful and simple all-in-one email marketing platform providing effective solutions for rapid business growth.

## What this connects

Powerful and simple all-in-one email marketing platform providing effective solutions for rapid business growth.

Vendor: https://www.mailercloud.com/

## Tools available

**6** tools available. First 6:

- `MAILERCLOUD_CREATE_LIST` — Create List — Tool to create a new recipient list in Mailercloud for storing and managing contacts. Use when you need to create a new mailing list for organizing contacts.
- `MAILERCLOUD_CREATE_PROPERTY` — Create custom property — Create a custom property for contacts in Mailercloud. Custom properties store specific information for contact records. Maximum of 100 properties allowed per account.
- `MAILERCLOUD_DELETE_PROPERTY` — Delete Contact Property — Tool to delete a custom contact property by ID. Use when removing unused custom fields from contacts. Cannot delete properties used in webforms.
- `MAILERCLOUD_GET_CLIENT_PLAN` — Get Client Plan — Tool to retrieve client plan information from Mailercloud. Use when you need to check the current subscription status, plan details, or verify API connectivity.
- `MAILERCLOUD_SEARCH_CONTACTS` — Search Contacts in List — Tool to retrieve contacts in a specific list with pagination. Use when you need to list or search contacts within a known list ID.
- `MAILERCLOUD_UPDATE_PROPERTY` — Update Contact Property — Tool to update a custom property of contacts in Mailercloud. Use when you need to modify the name or description of an existing custom property. Note: Editing custom property type using this API is not possible - you can only edit the name and description.

## Auth

Auth schemes: `API_KEY`.

## How agents use Mailercloud

Inside a Definable workflow, Mailercloud is one of the tools the **Distributor specialist** can call. Example coordination patterns:

- **Researcher → Mailercloud** — the Researcher (GPT-5.5) pulls context from Mailercloud (records, threads, documents), synthesises findings, and briefs the rest of the team.
- **Writer → Distributor → Mailercloud** — the Writer (Claude Opus 4.7) drafts copy in brand voice, the Verifier passes it, then the Distributor writes the result into Mailercloud (create record, post message, draft email).
- **Designer / Engineer → Distributor → Mailercloud** — the Designer ships an asset or the Engineer ships a code change, the Distributor delivers it via Mailercloud (attach file, open PR comment, post status).

The Verifier checks every Mailercloud call. On rate limit, schema drift, or auth refresh it self-heals and retries — the workflow completes without manual intervention.

## Categories

- email newsletters — https://definable.ai/apps/category/email-newsletters/
- marketing automation — https://definable.ai/apps/category/marketing-automation/

## Related

- HTML page: https://definable.ai/apps/mailercloud/
- Same category (email newsletters): https://definable.ai/apps/category/email-newsletters/
- All integrations: https://definable.ai/apps/
- Workflow (multi-agent loop): https://definable.ai/workflow/
- Apps llms.txt index: https://definable.ai/llms-apps.txt