How about the size of the new gmail?
> The all-new Gmail experience is available for businesses to start using today in the G Suite Early Adopter Program (EAP) and can be turned on in the Admin console. [...]
> Personal Gmail users can opt-in to the new experience, too (Go to Settings in the top right and select “Try the new Gmail.”).
In Google Admin
Apps > G Suite > Settings for Gmail > Advanced settings
...and then scroll down to :
New Gmail Early Adopter Program