Free Email Deliverability Test
Find out why your emails go to spam — and how to fix it.
This deliverability test checks the domain-level factors that decide whether your email reaches the inbox: SPF, DKIM and DMARC authentication, plus your mail-server (MX) setup. Each result comes with a plain-English explanation and a fix.
Most deliverability problems come down to authentication. If SPF, DKIM or DMARC is missing or misconfigured, mailbox providers treat your mail as suspicious and route it to spam — or reject it entirely under the 2024 Google and Yahoo sender rules. Getting these three right is the single biggest lever for landing in the inbox.
For agencies managing many senders, the paid plan continuously monitors deliverability across every client domain and alerts you before a change quietly starts sending mail to spam.
Frequently asked questions
- Why are my emails going to spam?
- Usually because of missing or broken SPF, DKIM or DMARC records. Run the test above to see which authentication check is failing on your domain.
- What is the most important factor for deliverability?
- Proper email authentication (SPF, DKIM and DMARC aligned). It's the foundation mailbox providers use to trust your mail before they ever look at content or reputation.
- Does this test send a real email?
- No. It checks your domain's DNS-level email configuration instantly, so there's nothing to send and no signup required.