Gmail | Daily DMARC News

June 21, 2026
All Three Inbox Giants Now Enforce One-Click Unsubscribe -- and the Deliverability Penalty for Getting It Wrong Is a 3x to 7x Inbox Hit
In February 2024, Google and Yahoo told bulk senders that one-click unsubscribe was no longer optional. Most senders treated it as a Google-and-Yahoo problem and updated their templates accordingly – or believed …
June 19, 2026
Google Postmaster Tools v2 Added a Deliverability Analysis Checklist -- And the 0.3% Spam Rate Is Now a Kill Switch
For years, Google Postmaster Tools gave senders a reputation label – High, Medium, Low, or Bad – and left them to figure out what was causing the problem. The labels were opaque by design. You could watch …
May 22, 2026
Gmail Is Now Two Filters: Why DMARC Gets You In and Gemini Decides If You're Seen
On January 8, 2026, Google announced that Gmail was entering the Gemini era. The announcement marked something more consequential than a feature release: it formalized the existence of a second filter in Gmail’s …

All Three Inbox Giants Now Enforce One-Click Unsubscribe -- and the Deliverability Penalty for Getting It Wrong Is a 3x to 7x Inbox Hit