Check if your emails
actually reach the inbox

About this free email deliverability checker

This free email deliverability checker runs eight automated checks against your domain or email address and tells you exactly why your emails may be failing to reach the inbox. It tests DNS routing, SPF, DKIM, DMARC, reverse DNS (PTR), blacklist status, subject line content, and sender reputation — all in one place, in under a minute.

Unlike generic email testers, this email deliverability checker gives you actionable, plain-English recommendations for each failed check — not just a score. You leave knowing what the problem is, why it matters, and what to fix first.

How this email deliverability checker works — step by step

This email deliverability checker runs all tests automatically once you submit your domain or email address. No account needed, no configuration required — just enter your details and review your full email deliverability test results.

What this email deliverability checker tests — seven checks in one audit

Email deliverability is not a single setting — it is the combined result of several independent signals that inbox providers evaluate simultaneously. This email deliverability checker runs seven distinct checks across DNS, authentication, blacklists, content, and reputation.

Most businesses that struggle with deliverability have one or two critical failures buried among otherwise healthy settings. The free email deliverability checker surfaces the exact problems so you can fix what matters without guessing.

Why every business needs an email deliverability checker

A business email that lands in spam is not just inconvenient — it is invisible. Sales follow-ups, client invoices, onboarding sequences, and transactional messages all fail silently. Running an email deliverability checker before and after any major configuration change is the only reliable way to know your messages are reaching the inbox.

For email marketers, poor deliverability compounds over time. Inbox providers track engagement rates — if recipients consistently do not open your messages (because they never see them), your sender reputation degrades further, pushing future messages even deeper into spam. Use this free email deliverability checker regularly to catch problems before they become reputation damage.

Common failures this email deliverability checker finds

After running thousands of email deliverability checks, the same problems appear repeatedly. Here are the most common failures this email deliverability checker surfaces — and what they mean for your inbox placement.

Who uses this email deliverability checker

Email deliverability problems affect every type of sender — from small businesses sending a handful of transactional emails per day to large marketing teams sending hundreds of thousands per month. This free email deliverability checker is built for anyone who needs to confirm their setup is correct before the next send.

What to do after running your email deliverability checker

Running the email deliverability checker is step one. Here is how to turn the results into lasting improvement in your inbox placement rate.

Free email deliverability checker vs. a managed email deliverability service

The free email deliverability checker identifies problems and provides instructions to fix them yourself. For businesses that need the configuration handled end-to-end, i2Medier's managed email setup service covers everything from DNS configuration to ESP integration and ongoing monitoring.