ask al
Ask Al: Do Microsoft or Google ever ignore p=reject?
Here’s a question that comes up more often than you might think: If you publish a DMARC policy of p=reject, do the biggest mailbox providers...
Topic
video
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Ask Al: What is Backscatter? (2026 Version)
I’ve written about backscatter before . (And so has USA Today .) And I’ll probably write about it again. Backscatter, at a high level, is d...
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Ask Al: GPT Transition, Reputation, and Issues
In my latest Ask Al video for Valimail , I walk viewers through the current state of Google Postmaster Tools , the very important sender fee...
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Ask Al: How do you actually set up a BIMI logo?
In previous videos, I’ve talked a lot about BIMI sender logos, often in the abstract. Many people do seem to understand what a BIMI logo is,...
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BIMI: What does self-asserted mean?
What does it mean when people talk about a "self-asserted" BIMI logo, and should you set one up? That's the topic of my latest...
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Troubleshooting 554 5.7.5 DMARC-related SMTP rejections
It's a bit of a cryptic error message, isn't it? Mail bouncing back with "554 5.7.5 Permanent error evaluating DMARC policy....
friday
Friday Fun: The Fascinating Story of Hotmail
Looking for a fun way to kill some time before you wrap it up ahead of the weekend? This might help. This YouTube video dives into the hist...
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How does a mailbox provider support and display BIMI logos?
If you’re wondering exactly how a mailbox provider like Yahoo, Google, Comcast or Fastmail might implement support for decoding and displayi...
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From DMARCbis to DMARC: New DMARC RFCs
DMARC has been updated! Three new RFCs have been published (RFCs 9989 , 9990 , and 9991 ) governing the latest incremental updates to the DM...
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Troubleshooting 4 different types of Microsoft DKIM rejections
If your attempts to send email to Microsoft-hosted inboxes are bouncing back intermittently with authentication-related rejections; specific...
dmarc
Learn more about DMARCbis
This post has been replaced with an updated version, click through to view.
bimi
ICYMI: BIMI success stories and data
Curious about BIMI adoption rates? Looking for BIMI success stories? The fact is, BIMI helps boost email engagement. And if you’re looking f...
dkim
What is DKIM2? What do you need to know?
There have been a few different blog posts, Linkedin posts, and email newsletters talking about DKIM2 lately. And oof, most of them seem to ...
ask al
Interview with Sam Masiello
It was a pleasure to sit down for a special edition of the Valimail “Ask Al” video series for a Q&A with an old friend and industry vete...
2026
Litmus Live Recap: Where are we headed in 2026?
I had a lot of fun joining Validity's Guy Hanson and Danielle Gallant recently, in our Litmus Live session, where we spoke to the topic...
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Five Inbox Logos That Are Not BIMI
Every so often someone emails me a screenshot from their inbox and asks a simple question: Is this a BIMI logo? A lot of the time, the answe...
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Ask Al: January review and reset for email senders
You survived Black Friday. You survived Cyber Monday. You survived Q4 and 2025. Now what? In my first Ask Al video of 2026 , I walk through ...
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Ask Al: 18 Months, 61 Videos
Just around eighteen months ago, I started work on a new video series for my employer, DMARC provider Valimail . The goal? Answer an email r...
ask al
Where does a BIMI logo show?
Here's a question that I was asked recently: Where, exactly, does a BIMI email sender logo show in the inbox (or next to the inbox) in a...
bimi
The benefits of BIMI: A real world example
For a recent Valimail Ask Al video , I brought in Scott Ziegler , Valimail's VP of product, to share some real world results showing the...