Users will still get the smart inbox behavior of the regular Gmail app, 15 GB of free storage space and support for both IMAP and POP email protocols. According to TechCrunch, several reports show the app coming in as a 9.51 MB download, which expands to 25 MB once installed. The regular Gmail app downloads at 20.66 MB and expands to 47 MB on your device. Google declined to comment when we reached out for more info.