Gmail and Yahoo Mail recipients can comprise over 65-70% of an organization's email target lists. Hence, organizations must ensure they prepare for the upcoming requirements for Gmail and Yahoo Mail for senders. Recently, Google and Yahoo jointly announced they will implement stricter controls to ensure their users receive relevant emails and can unsubscribe effectively.  Photo by Solen Feyissa on Unsplash   In this article, we summarize these upcoming Gmail and Yahoo Mail requirements and provide resources for additional readings if you choose to explore further. Key date: According to Adobe, Google and Yahoo Mail will implement these requirements in Feb 2024.   There are three (3) essential requirements 1. Authenticate your email sending domain We wrote a detailed article on the three pillars of Email Authentication in Essence of email deliverability - SPF, DKIM, DMARC and segmentation . In summary, Google and Yahoo will require the sender domain to have proper authentications,