As expected, it comes with exciting features which include message snoozing, attachment previews, a sidebar for both Google apps like Calendar and third-party services like Trello, offline support, confidential messages that self-destruct after a set time and more.
It’s also the only edition of Gmail that currently allows you to try out Smart Compose, which tries to complete your sentences for you.
G Suite admins will be able to immediately transition all of their users to the new Gmail starting in July, but users can still opt out for another 12 weeks. After that time is up, all G Suite users will move to the new Gmail experience.
Admins can also give users the option to try the new Gmail at their own pace or — and this is the default setting — they can just wait another four weeks and then Google will automatically give users the option to opt in.
Eight weeks after general availability, so sometime in September, all users will be migrated automatically but can still opt out for another four weeks.
The point is, you might get access to the new Gmail next month and if you hate it, you can still opt out for a bit longer. Then, if you still hate it, you are out of luck because come October, you will be using the new Gmail no matter what.