Email server & deliverability tools
Find out why mail bounces or lands in spam: check your mail servers, their reputation and encryption, and trace real messages.
- Email Domain Health CheckRun every email and DNS check for a domain at once and get a single report with everything that needs attention.
- Email Deliverability TestSend one email to a unique test address and get a report on how it authenticates, exactly as a receiving server sees it.
- MX Record LookupSee which mail servers receive email for a domain, in priority order, with their IP addresses and reverse DNS.
- SMTP Server TestConnect to a mail server on port 25 and check its greeting, STARTTLS support and TLS certificate, just as a sending server would.
- Email Blacklist CheckCheck an IP address or domain against widely used DNS blocklists, the lists mail servers consult to reject spam.
- 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.
- MTA-STS CheckerCheck that MTA-STS is set up correctly, so other mail servers only deliver to you over verified, encrypted connections.
- TLS-RPT CheckerValidate the SMTP TLS Reporting record that tells other mail servers where to send reports about encryption failures.