---
title: "Email Deliverability Checker"
description: "Check SPF, DKIM, DMARC, MX, and blacklist status for any domain."
source: "https://www.mailmark.dev/tools/email-deliverability-checker"
site: "Mailmark"
---

# Email Deliverability Checker

Check your domain's SPF, DKIM, DMARC records, blacklist status, and get an overall health score. Instant results, no signup required.

## What it checks

- **SPF** - whether a valid `v=spf1` record exists and which senders it authorises.
- **DKIM** - whether DKIM keys are published for the domain.
- **DMARC** - whether a `_dmarc` policy exists, and what it is set to.
- **MX** - the mail exchangers responsible for inbound mail.
- **Blacklists** - whether the domain appears on common DNS blocklists.

## API

```bash
curl -X POST https://www.mailmark.dev/api/tools/check-deliverability \
  -H "Content-Type: application/json" \
  -d '{"domain":"acme.com"}'
```

Rate limited per IP. Errors come back as structured JSON with `error`, `code`, and `hint`.

Related: [DNS Setup Guide](/guides/dns-setup), [Email Deliverability Guide](/guides/email-deliverability).

---

Mailmark - email hosting and campaigns for your own domain. Canonical page: https://www.mailmark.dev/tools/email-deliverability-checker | [llms.txt](https://www.mailmark.dev/llms.txt) | [OpenAPI](https://www.mailmark.dev/openapi.json) | [sitemap](https://www.mailmark.dev/sitemap.xml)