Spam Resource: All Things Deliverability
I'm Al Iverson, and I've been working in email technology for a good long while now. My areas of expertise? Email deliverability, SPF + DKIM + DMARC email authentication, email marketing best practices, dealing with blocklists, stopping spam and more. This blog (which now includes an email newsletter) began in 2001, and here we are, more than 1500 articles and over 4 million page views later. I hope you find this resource useful and thank you for reading!

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Deliverability Week 2024, June 17-21, 2024. More info soon!

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Who hosts what mail? MBP Spotlight is a new series here at Spam Resource where I’ll break down the top mailbox providers (including B2B) based on their rankings in the top ten m…
What the heck is contoso.com? Have you seen this domain show up in your email lists or customer database? I recently noticed this domain showing up in the DMARC reporting configu…
Not only did I stumble across this when reviewing Chris Zullo's capture and notes on my " Deliverability 201” domain and IP strategy deck for SFMC users , but it came up…
Are you a nonprofit in need of better email deliverability, or know one that could use some help? Every month, MV Braverman 's Inbox Welcome offers pro bono service to set …
Wondering what’s up with AMP for Email ? Email interactivity was a tricky thing to design and implement, and there were lots of hurdles and concerns along the way. But I was (and…
Over on the Yahoo & AOL Postmaster Blog, the friendly folks at Yahoo just announced an updated Yahoo Sender Hub Dashboard . What have they got for us? Why, it’s a dashboard …
On Friday, May 17, 2024, security researchers from ZONE published details of a vulnerability inherent to the DomainKeys Identified Mail (DKIM) email authentication protocol – on…
Canadian Matthew Vernhout has been a member of the Secret Society of Very Smart Deliverability People (SSoVSDP) for many years now. He's been connected to those worlds of ema…
Who hosts what mail? MBP Spotlight is there series here at Spam Resource where I’ll break down the top mailbox providers (including B2B) based on their rankings in the top ten …
Have you ever run across the domains onmicrosoft.com and gappssmtp.com in email headers before? Wondering what they are for and why they are there? Read on! In this modern age wh…
It's great to see folks writing about DMARC and how important it is to email security and deliverability. It's especially wonderful to have been given the chance to inclu…
Hard to believe that it's been nearly fourteen years since Holomaxx sued various spam filterers and internet service providers , alleging that their mail was being unfairly f…