Email deliverability checker

What this checks

This tool reads the public records that decide whether the rest of the internet trusts mail from your domain, then explains what it finds in plain words. It never sends a message, and it never sees the inside of your mailbox.

It starts with your mail servers, the MX records, and names the provider that runs them where it can, whether that is Google Workspace, Microsoft 365, or your own web host.

Then it reads the three records that stop your mail landing in spam and stop other people forging it. SPF is the list of who may send as you. DMARC is the instruction that tells other servers what to do with mail that fails, and whether to report it back to you. DKIM is the signature that proves a message really came from you.

It also checks whether your email and your website share the same hosting, because that decides whether rebuilding or moving your site could take your email down with it.

For anything that needs attention, the report names the record and the policy to ask your provider for. It does not hand you DNS records to paste, because the safe fix depends on your setup and is a short conversation.

Questions people ask

Why does my email go to spam?

Usually because the records that vouch for your mail are missing or weak. When a receiving server cannot confirm that a message really came from you, it plays safe and files it as spam.

What is SPF?

SPF is a public list of who is allowed to send mail using your domain. Servers check incoming mail against that list to decide whether to trust it.

What does DMARC do for you?

DMARC tells other servers what to do with mail that fails your checks, and it can send you reports. Set to quarantine or reject, it is what actually stops someone forging mail in your name.

Does this tool send any email?

No. It only reads the public DNS records that describe your mail setup. It never sends a message to you or to anyone else.