Email authentication has evolved from a best practice into a business requirement. Whether you send newsletters, receipts, password resets, or marketing campaigns, your domains should be properly authenticated before a single message leaves your platform. The good news is that the minimum standard is relatively straightforward. Every sending domain should have four core authentication technologies […]

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DMARC has become one of the most important email authentication standards in the world. It helps organizations protect their domains from spoofing, phishing, and brand impersonation while providing visibility into who is sending email on their behalf. In May 2026, DMARC took a significant step forward. The original specification, published as RFC 7489, has been […]

The post Preparing Your DMARC Records for DMARCbis appeared first on EmailKarma.

This question has been asked by email marketers for as long as dedicated sending infrastructure has existed. The fundamentals have not changed, but the details have. Here is an updated answer that reflects how warmup actually works in 2026. Q: What’s the best way to build reputation on new IPs? A: Building reputation on a […]

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Email did not always include guardrails. In the early 2000s, inbox providers needed a practical way to verify where email actually came from. Spoofing was cheap, easy, and effective. Sender Policy Framework(SPF), emerged around 2003 to solve one narrow but important problem: confirming which mail servers may send email for a domain. SPF lives in […]

The post Email Deliverability Fundamentals: SPF appeared first on EmailKarma.

This is a little teaser for an upcoming Podcast episode. Chris and I covered far more than this short checklist, and the full episode will be live on YouTube soon. Subscribe to be alerted when the episode goes live: https://www.youtube.com/@audiencebridge. I wrapped a great podcast with Chris Miquel from Audience Bridge, and it reminded me […]

The post Checklist for Staying Out of Trouble appeared first on EmailKarma.

Open rates used to be a dependable measure of engagement. You could tell who opened, when, and even where. Those days are long gone. Today, image caching and privacy proxies from Apple, Google, and Yahoo have blurred the picture, leaving marketers and deliverability pros searching for more trustworthy signals. Why proxies exist Apple shook things […]

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Gmail is tightening the screws on unauthenticated and non-compliant email starting November 2025.

The post Gmail Updates Sender Requirements and Bounce Codes appeared first on EmailKarma.

Yahoo has launched Sender Hub Insights, a new dashboard offering marketers a closer look at how their mail is performing across its ecosystem. At a time when inbox placement and complaint rates are harder than ever to benchmark, Sender Hub adds another layer of transparency. What makes it noteworthy isn’t just the stats themselves delivered […]

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Google announced that they are officially closing the door on the old Google Postmaster Tools interface. On September 30, 2025, the familiar v1 dashboards will be gone, and all users will be redirected to the updated Postmaster Tools (v2), which launched last year.  The old Postmaster Tools web interface is scheduled for deprecation. All dashboards […]

The post Google Postmaster Tools v1 Retires appeared first on EmailKarma.

Laposte.net is raising the bar for email authentication. Starting Tuesday, September 9th at 9am CEST (GMT+2), their anti-abuse team will enforce rules for emails missing proper authentication. Messages without valid SPF, DKIM, or DMARC will start to land in the spam folder (or as they say in France, Indésirables), and risk outright rejection. This update […]

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