Wombatmail powers email.

Wombatmail (previously XNND) is a suite of tools for email deliverability and more: data, monitoring, DNS checks, mailing list management, newsletter sending and more, all built by Al Iverson. Look up MX records, check the email authentication settings found in SPF, DKIM and DMARC domain records, find and view BIMI logos and abuse contacts for domains, and check IP address hostnames, scan reverse DNS, convert between IP ranges and CIDR blocks, and more.

Wombatmail data shows a breakdown of who hosts what mail for the top 10 million domains, giving you insight into the largest mailbox providers, seeing at a glance how much inbound mail is hosted by, filtered by, or forwarded by Google, Microsoft, GoDaddy, Namecheap, Cloudflare, IONOS and many other secure email gateways, domain registrars, internet service providers and mailbox providers.

Wombatmail data also provides insight into BIMI sender logo adoption, and shares data demonstrating what senders are sending mail to our spamtrap network.

It also powers the Spam Resource newsletter (as featured on the Spam Resource blog) -- you can see the signup process in person yourself by signing up here. After you sign up, you can click here to see the live stats for the newsletter.

All double opt‑in all the time, since 1998.