---
title: "Lettr (@lettr)"
description: "Lettr: API listing imported from its public OpenAPI spec."
account: "lettr"
---

# Lettr

Lettr: API listing imported from its public OpenAPI spec.

## APIs

1 public API with a stored document.
Each links to its markdown overview; the same address with
`/llms.txt` in place of `.md` lists its operations.
Changes across these APIs: https://skmtc.dev/lettr/feed.md

- [Lettr API](https://skmtc.dev/lettr/apis/lettr-api.md): Email: send transactional emails, manage templates, domains, webhooks, audiences and campaigns