What did Yahoo’s 2024 update introduce?

Yahoo's 2024 update introduced requirements mirroring Gmail's guidelines, creating coordinated industry standards. Yahoo mandated authentication (SPF, DKIM, DMARC), one click unsubscribe via List-Unsubscribe headers, and complaint rate thresholds below 0.3%.

The Yahoo update emphasized their long standing enforcement of similar principles, positioning the 2024 announcement as formalizing existing practices. Yahoo's coordination with Gmail signaled unified major provider expectations that senders could not avoid by optimizing for just one platform.

Yahoo's requirements apply across both Yahoo and AOL addresses given their shared infrastructure. Compliance benefits senders across both platforms simultaneously, while non compliance damages reputation with both provider audiences.