Just around eighteen months ago, I started work on a new video series for my employer, DMARC provider Valimail. The goal? Answer an email related question, usually with a focus of email deliverability or email authentication, with a short video, every week or two. Thus, “Your Email Authentication and Deliverability Questions Answered” was born. Here I am, sixty one videos later, having created six hours, thirty-two minutes, and twelve seconds of video content, answering your questions.
In those videos, I’ve covered email authentication concepts and questions: What are SPF, DKIM and DMARC? What does alignment mean? What should you do when your email service provider platform can’t customize the return-path domain? How do BIMI logos work? What’s a VMC and what trademark jurisdictions do they cover? Which mailbox providers display BIMI logos, and what does it actually look like?
I’ve talked about compliance, blocklist and security related topics, too. PCI compliance and how it ties into DMARC, the DKIM L= tag vulnerability, certificate provider issues, Spamhaus and blocklistings, and more.
And of course, email sender requirements. Updated requirements from Microsoft. Google ramping up enforcement. Convergence of sender requirements across the biggest mailbox providers (Microsoft, Apple, Gmail, Yahoo Mail) and others (La Poste), and much, much more.
Video is a new realm for me. I’ve never done something like this before and I didn’t have a video expert to help me figure out the tech or the process, making the resulting output perhaps a bit rough-n-ready. My process is still a bit fluid today, but I hope that folks have found the videos interesting and insightful. This all very much fits with my personal goal of helping improve the email ecosystem by helping folks understand and work their way through the different email-related challenges that they face.
You can find the series playlist on Youtube, if you'd like to follow along. Below find links to all sixty-one videos, in reverse chronological order:
- Where exactly does a BIMI logo show in the email inbox? (December 2025
- How exactly does a BIMI logo help email marketers? (November 2025)
- Gmail: Ramping up Email Sender Compliance Efforts (November 2025)
- New Yahoo Sender Insights (October 2025)
- Parked Domain Best Practices (October 2025)
- La Poste Updated Sender Requirements (September 2025)
- What is Valimail's Instant SPF? (September 2025)
- Email forwarding in 2025 (August 2025)
- Gmail DMARC Reporting Enhancements (August 2025)
- Three quick mailbox provider requirement updates (July 2025)
- Why should I monitor DMARC reporting ongoing? (July 2025)
- Why did my BIMI logo SVG file turn black? (June 2025)
- Top ten email and auth fun facts from 2015 (June 2025)
- Interview with Alexander Garcia Tobar, Valimail's CEO (June 2025)
- Valimail: 10 Years and our Engage-to-Enforce Challenge (June 2025)
- Would DMARC have prevented this? (May 2025)
- Help with Microsoft Authentication Rejections (May 2025)
- What does it mean to have implemented DMARC at enforcement? (May 2025)
- What is a P2 compliant sender address? (May 2025)
- Updated Microsoft Sender Requirements (May 2025)
- What is the state of DMARC in 2025? (April 2025)
- What is MAGY? Why do MAGY sender requirements matter? (April 2025)
- What does via mean in the from address in Gmail? (April 2025)
- New Microsoft Sender Requirements (April 2025)
- Gmail tabs: Love them or hate them? (March 2025)
- How do mailbox providers use DMARC? (March 2025)
- New Gmail Authentication Warnings (March 2025)
- What are example domains and why do they not belong in DMARC records? (March 2025)
- What should senders do about categories in Apple Mail? (February 2025)
- What do I do about SPF Alignment Issues with an ESP? (February 2025)
- What is the Public Suffix List (PSL)? (February 2025)
- How do I deal with SPF Alignment Issues in Google Worksace? (February 2025)
- What about PCI Compliance and DMARC? (January 2025)
- Is it Hard to Switch to Valimail? (January 2025)
- What is external domain verification? (January 2025)
- A BIMI & VMC Status Update (January 2025)
- What is Valimail BIMI Simulator? (January 2025)
- Communities & Collaboration (December 2024)
- Who/what is Spamhaus? (December 2024)
- Does DMARC prevent blocklistings? (December 2024)
- A BFCM Send Time Tip (November 2024)
- Why no SPF alignment in Google Forms? (November 2024)
- What does it mean for an MBP to support BIMI? (November 2024)
- How popular is DMARC in Higher Ed? (November 2024)
- What about Apple Business Connect? (October 2024)
- Are the Google/Yahoo sender requirements a good thing? (October 2024)
- What is the Gmail Sender Contact Form? (October 2024)
- How big is DMARC in Japan? (October 2024)
- Google adds CMC support for BIMI (September 2024)
- What can go wrong with a DMARC record? (September 2024)
- DMARC Adoption Rates in September 2024 (September 2024)
- Preparing for Holiday Season Deliverability Success (September 2024)
- BIMI & VMC Trademark Regional Limitations (August 2024)
- Why don't they organize email headers in a way that regular people can decode? (August 2024)
- What's the current status of BIMI? (August 2024)
- What happened to my Yahoo FBL? (August 2024)
- DKIM L= Exploit, current status? (June 2024)
- What makes a good community? (July 2024)
- Will Microsoft get on the bus? (July 2024)
- Entrust cert issues: What does this mean for VMC & BIMI? (July 2024)
- What do the new Apple tabs mean for marketers? (June 2024)
What did I get wrong? What did I get right? What would you like me to cover in the future? I'd love to hear your feedback and suggestions for future questions to answer. Please drop me a line!
