---
title: Introduction
description: Send high-deliverability transactional emails at scale.
---
> 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).


Reloop provides robust outbound transactional mailing infrastructure built for developers. Scale from a few emails a day to millions, with instant delivery tracking and optimized rendering across clients.