Spam Resource: All Things Deliverability

Over on the Mailop list (ignore the SSL warning, that is a long-standing issue), people are noting that Google Postmaster Tools has been missing data and/or been glitchy and/or disallowing new domain registrations over the past days. If you had trouble before, you might want t…

Look at the explosive growth of DMARC implementations! This is great to see. Read more about it over on dmarc.org .

If, like me, you use Gmail to test and check email authentication results, then you're used to seeing SPF results that say pass or fail. But what does it mean when it says "best guess"? Here's an example of a Gmail SPF results header that mentions "best…

Google just announced today how they've improved spam filtering using TensorFlow . What's TensorFlow, you might ask? "An open-source machine learning (ML) framework developed at Google. These new protections complement existing ML and rules-based protections, and…

Just over a year ago I predicted that 2018 would be a year full of mailbox provider consolidation, many folks implementing DMARC, and ISP filtering getting more tougher than ever. Was I right? It sure sounds a lot like what I worked on much of the time last year. Is it too g…

Remember back in September when I blogged about how to create a Google+ account to make your brand icon display next to your emails when sending to Gmail users? Well, looks like that won't work after a certain point, as Google is shutting down Google+ and will be dele…