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 page to bi-monthly, I was able to take us all the way back to when I first started collecting BIMI data for the top ten million domains, way back in June 2023. From then until now, I’ve found that the number of published BIMI records for the top ten million domains has doubled, from 14,305 then to 29,640 as of a few days ago.
The data shows us that BIMI is alive! It is growing! Those small increases in BIMI logos published by domain owners does indeed add up to significant interest in the BIMI sender logo standard over time, and it makes me very happy to see that.
As always, my data comes with caveats. I’ve very simply looked for, have they published a BIMI record? And if so, does it have a link to a PEM certificate file, suggesting a mark certificate? Those in the know recognize the unstated limitations in doing it that way, so allow me to clarify this for everyone else: Some people could be publishing records with an incorrectly formatted SVG image, and some people could be linking to a PEM file that is either not actually a mark certificate, or is an expired certificate, or is a certificate not accepted by mailbox providers today.
It is indeed possible to publish crazy wrong things in DNS, and trust me, some people do.
BUT, my job here is not to show off every perfect BIMI logo (though my Wombatmail BIMI data page does have a bunch of examples). I’m just trying to quickly and simply gauge the internet’s interest level in BIMI.
And if you’re looking for a better understanding of why people are adopting BIMI – what is the real world benefit? I’ve got you covered.
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 page to bi-monthly, I was able to take us all the way back to when I first started collecting BIMI data for the top ten million domains, way back in June 2023. From then until now, I’ve found that the number of published BIMI records for the top ten million domains has doubled, from 14,305 then to 29,640 as of a few days ago.
The data shows us that BIMI is alive! It is growing! Those small increases in BIMI logos published by domain owners does indeed add up to significant interest in the BIMI sender logo standard over time, and it makes me very happy to see that.
As always, my data comes with caveats. I’ve very simply looked for, have they published a BIMI record? And if so, does it have a link to a PEM certificate file, suggesting a mark certificate? Those in the know recognize the unstated limitations in doing it that way, so allow me to clarify this for everyone else: Some people could be publishing records with an incorrectly formatted SVG image, and some people could be linking to a PEM file that is either not actually a mark certificate, or is an expired certificate, or is a certificate not accepted by mailbox providers today.
It is indeed possible to publish crazy wrong things in DNS, and trust me, some people do.
BUT, my job here is not to show off every perfect BIMI logo (though my Wombatmail BIMI data page does have a bunch of examples). I’m just trying to quickly and simply gauge the internet’s interest level in BIMI.
And if you’re looking for a better understanding of why people are adopting BIMI – what is the real world benefit? I’ve got you covered.
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