# Introduction

> MailBlastr is a developer email platform: send transactional and marketing email from your own verified domain over a clean REST API, with delivery tracking, webhooks, audiences, and campaigns.

MailBlastr lets you send email from **your own domain** through a simple REST API. You verify a domain (SPF, DKIM, DMARC), create an API key, and send — with full delivery, bounce, complaint, open, and click tracking surfaced through the dashboard and webhooks.

The API is a **clean, drop-in REST API**: predictable resources (`emails`, `domains`, `audiences`, `contacts`, `campaigns`, `api-keys`), consistent request/response fields, and a uniform `{ statusCode, name, message }` error format.

## What you can do

- **Send transactional email** — `POST /emails` with HTML/text, attachments, custom headers, scheduling, and idempotency.
- **Verify sending domains** — generate and check SPF/DKIM/DMARC DNS records, toggle open/click tracking per domain.
- **Manage audiences & contacts** — build contact lists with subscribe/unsubscribe state.
- **Send campaigns** — marketing email to an audience, with per-contact unsubscribe and performance tracking.
- **Receive events** — delivery, bounce, complaint, open, and click events via signed webhooks and the per-email log.

## How sending works

1. **Add and verify a domain** — Add your domain in the dashboard and publish the SPF/DKIM/DMARC records it generates. See [Managing domains](https://www.mailblastr.com/docs/domains/managing).
2. **Create an API key** — Generate an `mb_` API key in the dashboard. See [Authentication](https://www.mailblastr.com/docs/authentication).
3. **Send your first email** — Call `POST /emails` from your verified domain. See the [Quickstart](https://www.mailblastr.com/docs/quickstart).
4. **Track results** — Watch delivery/open/click events in the dashboard and via [webhooks](https://www.mailblastr.com/docs/webhooks/overview).

> **Note:** New here? Start with the [Quickstart](https://www.mailblastr.com/docs/quickstart) — it sends a real email in under five minutes.