Published Monday, July 14, 2025 by Al Iverson. Click here to subscribe.

 
I share with you big news this week in B2C deliverability land: Comcast is getting out of the inbound email business. Starting sometime soon, millions of Comcast subscriber addresses will begin migrating over to Yahoo Mail.

Not just a backend shift, this marks another major expansion of Yahoo Mail's footprint. They're already handling mail for AOL, AT&T, Cox, Frontier, Verizon, Sky, Citilink, and more. If you're sending email marketing to U.S. consumers, there's a very good chance Yahoo is already behind a significant portion of your list, and that share is about to grow even larger.

Inbox placement, filtering behavior, complaint handling, and MX infrastructure for Comcast Xfinity's consumer subscriber base will soon fall under Yahoo's policies. If you weren't already paying close attention to how your mail performs across Yahoo's ecosystem, now's the time to bookmark the Yahoo Sender Hub.

As you read on/click through for more details, I'd love to hear your take on this transition. Got any thoughts? Feel free to reply to this email and share them with me.

I'm listening! And thanks for reading.
 
Yahoo Mail to absorb Comcast subscriber mailboxes
Starting in June 2025 and continuing into 2026, Comcast's Xfinity email service is transitioning to a new platform. Email users with comcast.net addresses will begin moving over to Yahoo Mail, which will take on the role of hosting those accounts going forward. Users will keep their existing comcast.net email addresses, along with ... read more
Keep Calm and Solve the Problem
I'm currently serving as president of my building's condo association. It's not a huge building, just over a couple dozen units, but it's big enough that things can sometimes go sideways. Of late, I've been dealing with a situation that includes a possible squatter, legal complications, harassment, and threats. It's a mess. The police have ... read more
Ask Al: Why did my BIMI logo SVG file turn black?
You thought you did everything right. You dutifully exported your SVG logo from Adobe Illustrator, you converted it to the tiny-ps format variant of SVG using one of the conversion tools from the BIMI Group's website, and what you were left with was a black blob, not your tastefully designed logo mark. Oh, snap! read more
DELIVTERMS: MX Record
Today on DELIVTERMS, the series here on Spam Resource where we help you decode deliverability and email terminology, we're looking at one of the core components of how email actually finds its way to your inbox. A foundational DNS record that helps direct the traffic behind the scenes. The term: MX Record. It might seem basic and obvious to some, ... read more
Cloudflare now requires auth for email forwarding
As of July 3, 2025, Cloudflare is enforcing a new requirement for its Email Routing platform: Messages must be authenticated with either SPF or DKIM in order to be forwarded. Now, if a message doesn't pass SPF or isn't signed with DKIM, it's not getting forwarded. Cloudflare explains that their rationale is simple: unauthenticated ... read more
Password Reset Emails: Best Practices
A bonus article from the archives (Monday, March 06, 2017)
I've been thinking about best practices for password reset emails lately. Instead of trying to re-invent a wheel that other folks have already capably designed, I'll just highlight a couple of thoughts and link to some more detailed info from a couple of folks with have good insight to share. read more
And that's all for now! Thanks for reading.

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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.