With Inbox preview, you won't need to worry about logging in to Gmail when the connection is weak
To activate this new feature, go to Settings , select the Labs tab and drag the slider down. Go to the feature called Inbox preview , you check the Enable option before clicking Save changes to change the settings for Gmail.
Thus, every time you log in to an account where the connection is slow, Gmail will only get in Inbox 10 mailboxes of the latest message to display. That means your Gmail account is still accessible normally and uses many of the features that Gmail offers in the untapped HTML mode.