Google has updated a setting in Gmail that allows you to change the number of mails that are shown per page.

The service has until now offered three options: 25/50/100.

Now there are more: 10/15/20/25/50/100.

The advantage of picking a smaller number is that it would speed up the load time of Gmail.

It also is beneficial if you are using their recently launched preview pane in horizontal split view.