# Unione AI integration on Definable

> UniOne is an email delivery service offering a versatile Web API and SMTP API for sending transactional and marketing emails.

## What this connects

UniOne is an email delivery service offering a versatile Web API and SMTP API for sending transactional and marketing emails.

Vendor: https://unione.io

## Tools available

**32** tools available. First 12:

- `UNIONE_DELETE_EVENT_DUMP` — Delete Event Dump — Tool to delete an event dump file and remove it from the queue or storage. Use when you need to clean up an existing event dump by its dump_id.
- `UNIONE_DELETE_TEMPLATE` — Delete Template — Tool to delete a template by ID. Use when you need to permanently remove a template from the account.
- `UNIONE_DELETE_WEBHOOK` — Delete Webhook — Tool to delete a webhook event notification handler by its URL. Use when you need to stop receiving callback notifications for a specific webhook.
- `UNIONE_EMAIL_BALANCE` — UniOne Email Balance — Tool to retrieve current account balance. Use when you need to check your email usage and limits before sending large campaigns.
- `UNIONE_EMAIL_CANCEL` — Cancel Scheduled Email — Tool to cancel a scheduled transactional email by its job ID. Use when you need to stop a pending email send before it's dispatched.
- `UNIONE_EMAIL_DOMAIN` — UniOne Email Domain Management — Tool to manage sender domains in UniOne. Use when you need DNS records for verification, trigger verification or DKIM checks, list domains, or delete a domain.
- `UNIONE_EMAIL_EVENT_GET` — Get Email Event — Tool to retrieve details of a specific email event by its ID. Use when you need event information for auditing or diagnostics.
- `UNIONE_EMAIL_GET` — Get Email Send Job — Tool to retrieve detailed information about a specific email send job. Use when you need its delivery metrics and history.
- `UNIONE_EMAIL_LIST` — UniOne Email List (Export) — Tool to export email events within a specified time frame. It creates an asynchronous event dump which can later be downloaded and parsed using UNIONE_EVENT_DUMP_GET.
- `UNIONE_EMAIL_RESEND` — Resend Sent Email — Tool to resend a previously sent email by its job ID. Use when you need to trigger a resend of an email that has already been sent and you have the original job ID.
- `UNIONE_EMAIL_RESUBSCRIBE` — UniOne Email Resubscribe — Tool to resubscribe a recipient who previously unsubscribed. Use when you need to restore a user's subscription status after they opt in again.
- `UNIONE_EMAIL_RESUME` — Resume Paused Email — Tool to resume a paused transactional email by its job ID. Use when you need to restart a paused pending email send.

## Auth

Auth schemes: `API_KEY`.

## How agents use Unione

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

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

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

## Categories

- transactional email — https://definable.ai/apps/category/transactional-email/
- email — https://definable.ai/apps/category/email/

## Related

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