mailX listing history

mailX finds out why your emails land in spam or junk, using live DNS checks, and tells you exactly what to fix.

Ask in plain English, for example "why are my emails going to spam?", "does my domain have the SPF, DKIM and DMARC that Gmail and Yahoo require for bulk senders?" or "check DMARC for acme.com". mailX runs the checks in real time:

• Full email deliverability audit in one step: SPF, DKIM, DMARC, blacklists and MX, with the fixes to apply in priority order
• SPF, DKIM, DMARC and BIMI validation, with the exact record found and what it means
• DKIM selector detection, so you don't need to know your selector
• Blacklist lookup for a domain across major DNS blocklists such as Spamhaus, Barracuda and SpamCop
• MX, TXT, CNAME, PTR and full DNS lookups
• SPF and DMARC record generation for Google Workspace, Microsoft 365 and other providers, ready to paste into your DNS provider
• SMTP and IMAP server settings for Gmail, Outlook, Microsoft 365, Zoho and other providers

Useful when you set up a new domain, move to Google Workspace or Microsoft 365, launch a newsletter or an outreach campaign, or see emails going to spam in Gmail or Outlook.

Every result comes from a live DNS query, so you see the state of your domain right now. No account or setup needed.

mailX only reads public DNS data. It never changes your DNS, never sends email and never asks for passwords.

Built by Mailwarm Inc. (YC S20), an email deliverability company.