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!

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Are you having trouble delivering mail to Gmail subscribers? Then you need Google Postmaster Tools . It is the single source of truth when it comes to understanding what Google s…
Launched in 2023, Apple Business Connect was introduced as a way for businesses to manage how their brand and business information was displayed across different Apple applicati…
The Internet Archive is back ... partially. After a data breach and denial-of-service attack brought the site down on October 9th , the service appears to be (somewhat) resurrect…
Deliverability consultant and developer Martin Alexander has something cool to share: Inbound Email (SMTP) to Webhook . What this does is sets up an inbound mail server to captu…
Would you like to make your voice heard? Now's your chance! Marketers are adopting AI tools quickly -- or are they? An upcoming panel for the Email Sender & Provider Coal…
Time for another Tuesday Tip here on Spam Resource. Tuesday Tips are meant to be short little bits of wisdom, easily digestible deliverability knowledge nuggets. Today's to…
Uh oh. You got an email. Possibly "from" your own email address. The bad guy sending the email says they're targeting YOU and YOU specifically. That they've got…
Starting with iOS 18.1, Apple users will now be able to change their primary iCloud email address. As "9 To 5 Mac" reports, prior to this, users could create aliases, b…
Today's official Spam Resource Friday Fun Frenzy commences with somebody who lives at the intersection of a whole bunch of things that I love: jazz, classical music, pop mus…
It is time to decode another deliverability acronym here on Spam Resource! Today, we're going to talk about CMC, which stands for "Common Mark Certificate." A CMC i…
Today's guest post comes from savvy MarTech strategist Cat Mears , with timely guidance on how to maximize your chances of inbox placement success in the most important quart…
In a previous Tuesday Tip, I suggested that those big lists of spam trigger lists to avoid were mostly bologna . And that remains true; whether or not your mail goes to spam at G…
Here's a quick peek at some new data -- and it surprised me! Of the top ten million domains , only about half of them publish SPF records. I'm not even talking about SPF …
Wow! You really do look fantastic. The one thing you could do, if anything, to up-level that sense of style, would be to buy a Spam Resource tee shirt with either the retro logo …
Do you host your domain's email service on Microsoft Exchange Online/Microsoft 365? If so, you should note that IPv6 support is coming , and that Microsoft is enabling that s…