Spam Resource: All Things Deliverability

When you’re launching a brand new SaaS application or service, you know it’s going to send emails.

I’ve written about backscatter before.

Another regional internet service provider is getting out of the consumer mailbox hosting business.

Sometimes progress in email marketing best practices feels like two steps forward, one step back.

If you've got email subscribers on your list from Colorado and New Mexico, take note: the mydurango.net email domain is officially dead.

A story recently broke on 404 Media that made deliverability experts everywhere cry a little inside: YouTube channel Channel 5 admitted to handing a CSV file of its email subscribers over to a third party so that person could market a new product to them.

Apple will officially release iOS 27 on Monday, September 14, 2026.

Validity just launched something very interesting: the Heatwave Domain Blocklist, and the goal is to identify and measure reputation of domains engaged in “synthetic warming” (automated exchanges between controlled mailboxes designed to make a young domain

Google Postmaster Tools V2, in both its user interface and API, offers information that they call a “Deliverability Analysis” (or “DeliverabilityStatusVerdict”) which attempts to provide plain language feedback and guidance on how Gmail recipients feel ab…

In my latest Ask Al video for Valimail, I walk viewers through the current state of Google Postmaster Tools, the very important sender feedback portal that helps to guide us all on how to maximize our chances of getting our email messages delivered to the…

When an email bounces back with a "mailbox full" or over-quota SMTP rejection, the standard assumption is that a subscriber has let thousands of unread messages pile up in their inbox.

Remember Google's program to verify US political senders?

In July, I reported that Apple planned to migrate domains for both iCloud Private Relay (Sign in with Apple) and "Hide My Email" over to a new shared domain: private.icloud.com.

Multiple folks have reached out asking why they're having trouble adding new domains or users in the new Google Postmaster Tools (GPT) V2 interface.

Based on this totally scientific, absolutely guaranteed to be accurate poll that I ran on Linkedin for the past week or so, DMARC is almost universally loved.

Things are happening in the world of Google Postmaster Tools.

In previous videos, I’ve talked a lot about BIMI sender logos, often in the abstract.

When I published my very first post back in August 2001, I never envisioned that I'd still be sitting at a keyboard twenty-five years later talking about email deliverability.

As reported by Ars Technica, security researcher Cory Solovewicz owns the domains noreply.net and noreply.us.

Here's a quick data snapshot that a friend was kind enough to share.

If you're living in the land of Salesforce Marketing Cloud and struggling when it comes to getting your emails reliably delivered to Microsoft inboxes, then this guide is for you.

My friend, expert deliverability consultant, Jennifer Nespola Lantz, recently posted to Linkedin that the broad layoffs happening in tech right now have reached her.

Here is a fresh slice of humble pie: even after years of advising senders on authentication protocols and email best practices, I managed to break my own newsletter's SPF record last week.

What does it mean when people talk about a "self-asserted" BIMI logo, and should you set one up?

Newsletter strategist Dylan Redekop recently wrote about the "context box," his term for the line in a marketing or newsletter email explaining why you are receiving a particular message.

It's a bit of a cryptic error message, isn't it?

Hey, big senders!

Editor's note: Today I've invited a contribution from Jakub Olexa, CEO of Mailkit and Omnivery.

There's a very exciting new proposed email specification making its way through the IETF, called APRF (Aggregate Performance Reporting).

Last October, Yahoo sold AOL to the Italian company Bending Spoons for approximately $1.5 billion (as reported by Forbes and others).