At this time the latest variant of Gmail (v7.2) is in the procedure of progress. This latest variant of Gmail will bring upgrading in app shortcuts. Earlier than this upgrading, “Compose” was just the one shortcut Gmail app. When the users select “Compose” Gmail app will open in the main Google Account but now the upgraded App Shortcuts will bring a difference here.

Now there are Shortcuts for more than one Google account at a time so the users can move fast to a particular Google account. On the other it also looks like that the shortcuts are just for two to three of your accounts.

Even though, this feature is only applicable for smartphones operating Android 7.1.