when installed, it takes up 24.8 MB – about half of Gmail’s 47.28 MB.
https://www.apkmirror.com/apk/google-inc/gmail-go/gmail-go-8-1-28-184986974-go_release-release/gmail-go-8-1-28-184986974-go_release-android-apk-download/
review - https://thenextweb.com/apps/2018/02/16/gmail-go-is-almost-identical-to-the-original-android-app-but-half-the-size
https://www.apkmirror.com/apk/google-inc/gmail-go/gmail-go-8-1-28-184986974-go_release-release/gmail-go-8-1-28-184986974-go_release-android-apk-download/
review - https://thenextweb.com/apps/2018/02/16/gmail-go-is-almost-identical-to-the-original-android-app-but-half-the-size