---
title: "Lettermint integration · RUAL Documentation"
description: "Use Lettermint in RUAL blueprints. Send single and batched email through Lettermint with an API token. Every block, with its pins."
canonical: https://docs.rual.nl/integrations/lettermint
language: en
---

# Lettermint

Send single and batched email through Lettermint with an API token.

> **Credentials** Create a [service provider](https://docs.rual.nl/blueprints/service-providers) for this service and point the blocks at it. The cluster holds the key, so it never sits on a pin or in a blueprint export.

## Guides

- [Email System Setup](https://docs.rual.nl/tutorials/email-system)

## Blocks

Add these blocks on the canvas by searching for their name. Each block page lists its pins and how it behaves.

- [open connection `lettermintconnection_open` Opens a new lettermint connection using the given API token.](https://docs.rual.nl/block-types/lettermint/lettermintconnection_open)

- [send email `lettermintconnection_send_email` sends a single email via Lettermint.](https://docs.rual.nl/block-types/lettermint/lettermintconnection_send_email)

- [send email batch `lettermintconnection_send_email_batch` sends up to 500 emails in a single Lettermint batch request. Each item in the input array supports the same fields as the single send block (from, to, subject, html, text, cc, bcc, reply_to, tag, attachments).](https://docs.rual.nl/block-types/lettermint/lettermintconnection_send_email_batch)

## Next steps

- [Third-Party Integrations](https://docs.rual.nl/tutorials/third-party-integrations): Calling outside APIs, receiving their webhooks, keeping data in sync and handling failures.

- [All integrations](https://docs.rual.nl/integrations): Everything RUAL connects to, by what it is for.