Showing posts with the label data

The state of DMARC in 2026

Are you curious about the current state of DMARC in 2026? Want to learn more about the adoption of email authentication and domain protection, who out there are putting their best foot forward to prevent phishing and spoofing of their important email domains? It's something…

Fun with data: BIMI records in DNS (February 2026 Update)

Here’s a long overdue updated snapshot of BIMI sender logo DNS records as found in the top ten million domains data set (the domain list from host.io , where I query and log a bunch of DNS records for every domain, every month). By adjusting the view on my Wombatmail BIMI data…

Zeta: Q3 2025 Email Benchmarks

Looking for benchmark email marketing stats? Zeta Global’s got the data, and they’re not afraid to share . Benchmark data can be a bit of a mixed bag. It can be handy to use as a starting point to know if you’re doing anywhere near okay from a deliverability perspective, but br…

Holiday mid-season check in: What DMARC data reveals about BFCM delivery challenges

Webinar alert! You've survived Black Friday and Cyber Monday, perhaps Giving Tuesday, too, maybe it ended up stretching into Cyber Week, or maybe it's still Cyber Month for all of December. Did you see higher than usual email rejections? Mailbox providers quicker to blo…

Mickey says: Don't Panic

Deliverability folks love their dashboards. But too often, a dip in open rates or a spike in bounces sends people into full-on panic mode. My friend, expert deliverability consultant Mickey Chandler wants you to take a deep breath and back away from the emergency button. In hi…

Fun with Spamtrap Data: What and Why?

It's nearing the end of the month, and I suspect that the folks at Koli-Lõks OÜ are getting ready to post another month's worth of spam trap data. For fun, I thought I would share March's data , with their permission. Who are they and what is this data? I went to t…

Fun with data: Yahoo Mail, by the numbers

By one reckoning, Yahoo Mail apparently has 225 million active users . That's nothing to sneeze at. And they've been there since nearly the beginning of webmail, having acquired Rocketmail in 1997 to become the foundation of what we now know of as Yahoo Mail. And nowada…

Fun with data: Mimecast, by the numbers

Just a quick little peek at data today. This time around, it's month-by-month counts of MX records, in the top ten million domains, that point at servers with "Mimecast" in the domain name referenced in those records. Mimecast is a secure email gateway (SEG) platf…

Fun with data: Top Mailbox Providers in Japan

Here’s a fun-but-simple exercise: Take the list of top 10 million domains. Look for all of the domains for a given country’s TLD, in this case, .jp. Let’s look at the MX records for those and see who hosts mail for the most Japanese domains. This doesn’t mean that a given mailb…

Yahoo and AOL domains (2024 Update)

Today in "Fun with Data," I present to you a link to a downloadable list containing the top Yahoo Mail email domains . Why would you need this? Maybe you run some certain mail server ( MTA -- mail transfer agent) software that can't group domains based on MX. May…

Fun with Data: Ranking mailbox providers in .edu

Time for fun with a smaller data set! In my most recent snapshot of the top ten million domains list, just over 4200 of them are domains ending in the ".edu" TLD. The .edu top level domain is a small one, with nowhere near the many millions of domains registered under…

SPF adoption rates over time

Here's a quick peek at some new data -- and it surprised me! Of the top ten million domains , only about half of them publish SPF records. I'm not even talking about SPF records proven valid; just counting anything with v=spf1 in a DNS TXT record at the topmost (apex) l…

Who hosts mail for more domains: Microsoft or Google?

Time to slice and dice my favorite dataset: the top ten million domains list. This thing provides me with endless fun and joy. Tracking something over time provides unique insight into growth of mail provider reach, authentication protocol reach, insight into which providers a…

DMARC growth, by the numbers

As I've done for a while now, I continue to track DMARC adoption month-by-month by caching DNS data (including DMARC records) for the " top ten million domains " data set. It may not be a perfect view of the universe, but it's a fun little slice of it that hel…

BIMI: Adoption, example logos and provider support

BIMI ( Brand Identifiers for Message Identification ) is a really interesting protocol. It allows a domain owner to publish a logo, meant to be displayed alongside emails from that domain, in various email clients. It works in close conjunction with email authentication and DMA…

Buttondown: Where is that mail going?

Buttondown provides “Newsletter software for people like you” — it’s a cool and easy to use email newsletter platform created and managed by Justin Duke . He was kind enough to share a domain data snapshot with me, and with all of you. What does this data snapshot show? It’s ea…

Fun with data: DKIM selectors from spam

This may not be super scientific, but it is something I'm going to have fun with nonetheless. Let's take the last thirteen days worth of spam sent to spamtrap addresses in my Wombatmail spamtrap feed , which means somewhere around 63,000+ spam messages. What percentage …

Spamhaus: A new website, with new data

International anti-spam and security experts Spamhaus have been teasing the launch of their new website for a while now. And now that it's finally here , you'll want to check it out . Besides the usual domain and IP blocklist lookup tools, there's also more overall…

Fun with data: Apple Domains

For a fun little multi mini-snapshot of MX domain data, let's take a look at Apple. What do they host, mail-wise, for who and for what domains? Wombatmail Data to the rescue! Let's see what we can pull out from the top ten million domains. Corporate mail domains hosted…