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Need Inbox Help? Ask Jen!
Looking to hire a deliverability consultant to help investigate and fix your inbox woes? Jennifer Nespola Lantz can help. She and I previously worked closely together at Kickbox, working side-by-side...
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Posta: Run Your Own Email Sending API
When you’re launching a brand new SaaS application or service, you know it’s going to send emails. That means you’ve got to pick an email delivery service. Which API are you going to use to allow your...
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Ask Al: What is Backscatter? (2026 Version)
I’ve written about backscatterbefore. (And so has USA Today.) And I’ll probably write about it again. Backscatter, at a high level, is deceptively simple.Somebody forges your domain.Somebody sends a...
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Dead domains (sort of): TDS Telecom offloading email service
Another regional internet service provider is getting out of the consumer mailbox hosting business. TDS Telecom has announced that it is winding down inbox hosting, handing off email duties to...
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Goofus and Gallant: 3 Missed Opportunities to Do the Right Thing
Sometimes progress in email marketing best practices feels like two steps forward, one step back. Over the weekend, three emails landed in my inbox that were technically legal under US law, but pretty...
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Dead domain: mydurango.net
If you've got email subscribers on your list from Colorado and New Mexico, take note: the mydurango.net email domain is officially dead.Ting Internet, owned by Tucows, acquired regional communication...
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Bad Ideas: Why Giving Your Email List to a Third Party Is Just Dumb
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...
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iOS27: Bringing Apple Mail Improvements
Apple will officially release iOS 27 on Monday, September 14, 2026. With that release comes an updated version of Apple Mail on mobile. 9to5Mac (and others) say that improvements will include faster...
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New from Validity: The Heatwave Domain Blocklist
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...
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GPT: Let’s Talk Deliverability Analysis
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...
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Ask Al: GPT Transition, Reputation, and Issues
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...
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Mailbox full: Not always an inbox problem
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. For Gmail users,...
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Google Resurrects Its Verified Political Sender Program
Remember Google's program to verify US political senders? (Which Jennifer Nespola Lantz covered for Spam Resource back in 2022, see here and here to revisit that bit of history.) Well, it's back.The...
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Apple Not Changing "Hide My Email" Addresses After All
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. While existing legacy...
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Having trouble adding users and domains in GPT V2?
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. In my own testing, adding domains and users...
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I’m a DMARC fan. Are you?
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.A couple of people got a bit snarky in the...
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GPT: V1 Retirement and Important Updates
Things are happening in the world of Google Postmaster Tools.If you’re a long time user of Google’s sender reputation dashboard known as Google Postmaster Tools (what is that?), you may have already...
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Ask Al: How do you actually set up a BIMI logo?
In previous videos, I’ve talked a lot about BIMI sender logos, often in the abstract. Many people do seem to understand what a BIMI logo is, by now. All well and good, but I did recently have somebody...
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Email Isn't Dead, and Neither Is This Blog: Spam Resource at 25
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.A quarter of a century....
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No Reply, Not Your Domain? Yes, Problem
As reported by Ars Technica, security researcher Cory Solovewicz owns the domains noreply.net and noreply.us. Every day, he sees nearly 700 inbound email attempts to addresses on those domains. That is...
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