---
title: Details
description: Details of the emails API, SMTP, and SDK integration options.
---
> For the complete documentation index, see [llms-docs.txt](/llms-docs.txt) or the site index [llms.txt](/llms.txt). Full docs corpus: [llms-full-docs.txt](/llms-full-docs.txt). Prefer markdown URLs (append `.md`) for agent consumption. Product skill: [skill.md](/skill.md).


### Key Capabilities

* **REST API & SMTP Relay**: Integrate using our REST API or point your existing app configurations to our high-performance SMTP relay.
* **SDK Support**: First-class SDKs available for Node.js, Go, Python, and Rust.
* **Instant Delivery Verification**: Real-time status updates from delivery to click.
* **Rich Styling Support**: Render using raw HTML, Markdown, or React-Email templates.