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 Ma…
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July 13, 2025 Update: As Comcast is in the first steps of outsourcing their consumer mailbox hosting, moving all subscribers' email service over to Yahoo Mail, going forward,…
Comcast is updating the DMARC policy for comcast.net, the domain used for Comcast Xfinity customer mailboxes. You may recall that Comcast has a number of domains , but that it ul…
Comcast is eliminating the ability to encrypt inbound email connections with old and insecure versions of TLS. On May 20, 2024, Alex Brotman from Comcast shared the following on…
Deliverability folks from a few different email sending platforms have mentioned seeing a new bounce from Comcast, in response when trying to mail certain comcast.net subscribers…
Twilio Sendgrid's Denis O'Sullivan recently put together this great Q&A With Alex Brotman from Comcast , and it provides stellar insight for senders. No secret sauce …
Here's an ever perplexing question (and one that results in a lot of traffic to my blog): Do Comcast email addresses end in .com or .net? Is it comcast.com or comcast.net? Am…
It's time for another BIMI update, and this time it's chock full of new details that you'll want to know! So let's get right to it. The Authindicators Working Gro…
It's time for your periodic BIMI adoption status update. A quick overview of what this is all about: BIMI is a standard being adopted by multiple internet services provide…
Hey! I know that people find the ISP domain guides useful, so I thought I'd fire up the blog machine to share info about our friends at American telecommunications company C…
American multinational telecommunications conglomerate Comcast , most well-known to us Internet users here in the US as the provider of cable modem-based internet service Xfinity…
It's been a while since I've posted a BIMI status update, and things are changing! Things are standardizing! Things are getting good. So, let's get right to it...
A simple tip for you today: If you ever switch up your email address, especially if you decide to change which service you use for your personal email inbox, you might want to co…
You might notice that in my " 2020: What's next? " post, I didn't mention BIMI . BIMI, aka Brand Indicators for Message Identification, is the new way to spec…
Return Path's J.D. Falk reports on Comcast's efforts to let customers know when their home computers are infected: Pushing infectees into walled garden, redirecting them …
Laura Atkins writes today about the newly discovered settlement between 'email marketer' E360 and Comcast: "Today, only weeks before the trial date, a settlement agr…
I have a cold, which leaves me lacking energy and lacking the desire to do anything beyond sit on the couch and read. Read what, you might ask? Why, read the updates in the ongoi…
E360 (who is also fighting Spamhaus in court) just saw their lawsuit against Comcast laughed out of court. The judge in this case really seems to be savvy on the issues involved…
Mickey Chandler says: " EPIC FAIL ." Another blogger (I'm not going to help his Google-fu by linking) states that he "hates to say it," but that Comcast…
