Spam Resource: All Things Deliverability
Since 2001, a blog and email newsletter published by Al Iverson. With over 500,000 words, collected in 1500+ articles and viewed more than four million times (so far), focused on the topics of email deliverability, email authentication and DMARC, stopping spam, dealing with spam folder and spam blocking issues, complying with modern sender requirements, and much more. Thanks for visiting!
Half Wombat

Auth: SPF, DKIM + DMARC

Google

Yahoo

Microsoft

Apple

Comcast

Tuesday Tips

Friends

Spam Stopping

Permission

Domains

Let's Learn

Let's Chat

Platforms

So Very

And Also

Sending email messages to French subscribers with mailboxes hosted by Orange? Starting in mid-August 2025, Orange.fr will begin "triggering protection mechanisms" if y…
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 consul…
It is time to decode another common email term here on Spam Resource! Today, we're going to talk about the "View as a Webpage"  (VAWP) or "view online" li…
People sometimes ask how they can help support Spam Resource. (Which is very kind of you. Thank you!)  Should I be selling memberships or something? I don’t think that’s going to…
If you've updated to iOS 18.5 recently and suddenly found that the Mail app on your iPhone is acting more like a frozen popsicle than a productivity tool, you're in good …
I declare that it is time for a break from email headers and spam traps to talk about ... actual spam. The canned kind. That you eat. Hormel has gone far beyond the original salt…
It's byline time! Thank you to both Manufacturing.net and Total Retail for giving me the opportunity to talk to their audiences about DMARC adoption rates and the real-worl…
OnMail, Edison Software's privacy-focused email service, will officially shut down on July 31, 2025 . This marks the end of their attempt to reimagine the inbox experience wi…
This isn't a click-baity headline sneakily chosen to attract random SEO attention, I promise you. Instead, today I share five things that I have personally AND recently been …
Today I share with you  Robyn's debut single from 1995. You all know who she is now , but were you aware of who she was then? Yeah, I was! I admit it. This album -- " R…
Joe asks: " Help! We've been using Gmail to host our company emails without any issues until recently. Now, emails sent from my business account are suddenly getting fla…
CTO of customer engagement platform Customer.io, Matthew Newhook , has put together a solid explainer on how email scanners and proxies are skewing open and click data, and I thi…
In case you missed it, I recently co-hosted a webinar diving into the findings of Valimail's  2025 Disinformation and Malicious Email Report , alongside Warren Duff from Vali…
In my latest Valimail Ask Al Video , I walk through four specific email authentication failure scenarios, things that could trip you up when sending email to Microsoft recipients…
Here's a simple-but-cool tool created by Faisal Misle : smtp.codes . smtp.codes is a collection of SMTP response codes returned by email servers and a guide to help you unde…