Email Deliverability Test
Send one email to a unique test address and get a report on how it authenticates, exactly as a receiving server sees it.
Free, no account needed.
How it works
- Click the button to get a one-time address that is valid for an hour.
- Send a normal email to it from the account or service you want to test: your mailbox, your CRM, your newsletter tool.
- The report appears on the page within seconds of the message arriving.
What the report checks
- SPF, DKIM and DMARC results for the actual message, including domain alignment.
- The sending server's IP, its reverse DNS and whether it is on major blocklists.
- The DMARC policy of your From domain and what a receiver would do with a failing message.
- Header problems that can hurt inbox placement.
When to use it
Run it whenever you add a new sending service, change DNS, or hear that your emails are landing in spam. Testing each service you use, one at a time, is the quickest way to find the one that isn't set up properly.
Frequently asked questions
Do you keep my test email?
We keep the results for a short time so the report can be shown, then delete them automatically. Test addresses expire after an hour.
Does this test inbox placement at Gmail or Outlook?
It tests authentication and reputation signals, which are the main technical reasons mail goes to spam. Content and engagement also affect placement and vary by mailbox provider.
Related tools
- Email Header AnalyzerPaste the raw headers of an email to see its route, the delay at each hop, and how it did on SPF, DKIM and DMARC.
- DMARC CheckerLook up a domain's DMARC record and see exactly what it does: the policy, where reports go, and what to fix.
- Email Blacklist CheckCheck an IP address or domain against widely used DNS blocklists, the lists mail servers consult to reject spam.
- DKIM Record CheckerLook up a DKIM public key and check its type, length and syntax. Don't know the selector? Leave it blank and we'll try the common ones.