---
title: "Docs"
description: "API and SDK guides for sending email with Unitpost."
url: https://www.unitpost.com/docs
section: "Docs"
updated: 2026-07-31
---

# Docs

> API and SDK guides for sending email with Unitpost.

HTML hub: https://www.unitpost.com/docs

- [Install the SDK](https://www.unitpost.com/docs/install): Add the official Node, Python, or Ruby SDK — or call the API directly. ([Markdown](https://www.unitpost.com/docs/install.md))
- [Quickstart](https://www.unitpost.com/docs/quickstart): Create a key, verify a domain, and send your first email. ([Markdown](https://www.unitpost.com/docs/quickstart.md))
- [Templates & variables](https://www.unitpost.com/docs/templates): Reference a saved template and pass per-recipient data. ([Markdown](https://www.unitpost.com/docs/templates.md))
- [Subscription topics](https://www.unitpost.com/docs/topics): Let contacts opt out of one kind of mail without leaving your list. ([Markdown](https://www.unitpost.com/docs/topics.md))
- [Sending domains](https://www.unitpost.com/docs/domains): Add SPF, DKIM, and DMARC so mail sends from your domain. ([Markdown](https://www.unitpost.com/docs/domains.md))
- [Open & click tracking](https://www.unitpost.com/docs/tracking): Control engagement tracking per send, template, or category. ([Markdown](https://www.unitpost.com/docs/tracking.md))
- [Batch sending](https://www.unitpost.com/docs/batch): Send up to 100 distinct messages — schedule and cancel as a unit. ([Markdown](https://www.unitpost.com/docs/batch.md))
- [Scheduling & canceling sends](https://www.unitpost.com/docs/canceling): Schedule for later and recall a send before it leaves. ([Markdown](https://www.unitpost.com/docs/canceling.md))
- [Idempotency & retries](https://www.unitpost.com/docs/idempotency): Safely retry sends without duplicating mail. ([Markdown](https://www.unitpost.com/docs/idempotency.md))
- [Bounces, complaints & suppression](https://www.unitpost.com/docs/deliverability): How bad addresses are handled and where to review them. ([Markdown](https://www.unitpost.com/docs/deliverability.md))
- [Webhooks](https://www.unitpost.com/docs/webhooks): Receive signed event notifications at your own endpoint. ([Markdown](https://www.unitpost.com/docs/webhooks.md))
- [Inbound routing](https://www.unitpost.com/docs/inbound): Receive emails at your domain and get clean JSON POSTed to your webhook. ([Markdown](https://www.unitpost.com/docs/inbound.md))