The Agentic Inbox: How AI Is Reshaping Email Marketing

AI is reshaping the email inbox before consumers ever open a message. Apple Mail, Gmail, and Yahoo Mail, which account for roughly 74 percent of consumer email usage, are using AI to summarize content, extract promotional details, and determine which messages receive greater visibility. As these systems become more influential, the clarity and relevance of an email can affect how accurately it is represented and whether recipients see it at all.

PMG’s Agentic Inbox Report examines how these changes are altering email design, strategy, testing, and measurement, with practical guidance to help brands adapt their programs.

This report features insights on:

• How AI-powered summaries, promotional annotations, and relevance-based ranking are changing the inbox experience

• Design principles that help inbox systems identify and accurately represent important content

• How audience segmentation, lifecycle messaging, year-round engagement, and sender authentication can support inbox visibility

• Why traditional email tests and performance metrics may provide an incomplete view of the channel’s business impact

Download the report today.