Spam Resource: All Things Deliverability

Published Tuesday, September 02, 2025 by Al Iverson. Click here to subscribe.

It's that time again!

This week: accusations of partisanship leveled at Gmail, La Poste jumping on the modern sender requirements bandwagon, why you should check out Minty Email Tester, and more!

Looking to learn from and network with deliverability specialists and deliverability-focused email marketers? If so, you'll want to check out the details of the upcoming free ESPC event. See details below.

In my brain today: I've got more thoughts on A.I. and the future of email deliverability. Interested? Should I include it in next week's newsletter? Got your own thoughts that you'd like me to capture and share? I'll be sure to include (anonymized) reader feedback. Reply and let me know your thoughts!

And now, here's what's going on in the world of email deliverability.

This Week's Featured Story

FTC: Gmail spam filters are partisan
Right-leaning political groups in the US have long accused Gmail of unfair left-leaning bias when it comes to spam filtering. As an example, the Republican National Committee alleged so in a lawsuit filed against Google in 2022 (and lost in 2024). Now, the allegation has been raised again, this time by US Federal ...

And More to Read from Spam Resource

La Poste: Authentication Required
Hey, big senders! It's time for another update regarding enhanced sender requirements put forth by a large mailbox provider. This time around, it is French mailbox provider La Poste (laposte.net), and they are adopting authentication-related sender requirements similar to those that you're likely already aware of, courtesy of so ...

Minty Email Tester: another testing/rendering tool option
After I recently blogged about all of the different email render test tools I know about (including Testi@), HTML Email Developer David Gutierrez reached out to share something he built for the email developer community: Minty Email Tester. If you’ve ever used Putsmail, you probably know it’s shutting down at ...

Event alert: ESPC Fall 2025 Meeting
The Email Sender & Provider Coalition (ESPC) is pleased to announce its upcoming 2025 Fall Meeting, happening Thursday, November 13, 2025 at ArentFox Schiff in Washington, DC. It’s a free, all-day event featuring timely discussions on the issues shaping email and digital messaging today. If you care about privacy ...

Talking deliverability with HubSpot
Thanks to Laura M. Browning for inviting me to be part of HubSpot's Masters in Marketing blog/newsletter series very recently. In that interview (find it here), we talked about common deliverability myths, how spam word filtering can sometimes happen but it shouldn't be your focal point when it comes to avoiding spam folder issues, and how ...

With Something Fun & Off-Topic, too!

Friday Fun: Basic Computer Terms, 1976 Edition
Today's time waster is a training film from 1976, helpfully titled Basic Computer Terms. It features Harry, a frazzled businessman who is about 90 years behind on filling his back orders, and Jane, a computer expert who patiently explains that no, computers don't eat people (darn), and yes, you really can learn to use one without being ...

Plus Bonus Article From the Archives (Sunday, January 28, 2024)

Bonus: DMARC Dictionary from dmarcian
Here's a link to DMARCian's DMARC Dictionary. Say that ten times fast! Then bookmark it, because it'll come in handy as you navigate this new world of DMARC. And don't forget to keep their DMARC Inspector link handy, too.

And that's all for now! Thanks for reading. And if you made it this far, let me know if you like the updated newsletter design! 😊

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Mailing address: 1522 W Jarvis Ave, Chicago IL 60626. I am not a lawyer and this is not legal advice. Duh. All opinions are mine alone and do not necessarily represent the views of any group, company, organization or other person. No chimps, bees or clouds were harmed in the crafting of this 100% artisinal and protein free email newsletter.