These ways have their drawbacks, but you might try any of them.
This can save time and simplify the email management process.
you could also use the built-in web app to access Gmail on your Fire Tablet.
Ivan Makhynia / Tab-Tv
To do this, tap and hold on an empty space on the home screen until a menu appears.
Then, select Widgets and scroll down until you find the Bookmark widget.
Drag and drop the widget onto the home screen and choose the Gmail bookmark you created earlier.
A plus icon inside the circle will pop pop the parameters menu.
Scroll to the Security & Privacy section and toggle on the Apps from Unknown Sources option.
This will allow you to download apps from other sources besides the Amazon Appstore.
Download the updated APK file and follow the same installation process.
