Gmail client-side encryption (CSE) is now generally available for Google Workspace Enterprise Plus, Education Plus, and Education Standard customers.

The feature was first introduced in Gmail on the web as a beta test in December 2022, after being available in Google Drive, Google Docs, Sheets, Slides, Google Meet, and Google Calendar (in beta) since last year.

#CoSoSec

https://workspace.google.com/blog/product-announcements/gmail-and-calendar-client-side-encryption