The default number of emails per page is 50 in your Gmail account. However, you can change to a different number, e.g., 20 emails per page.
Step 1: Login your Gmail account (please refer here to open one if you do not have an account yet);
Step 2: In the Gmail account, click the "Setting" button from the right-top corner;
Step 3: Click the "Settings" command from the drop-down list;
Step 4: Under the "General" tab, change the number of conversations per page, e.g., 20;
Step 5: Click the "Save Changes" button, the number of emails per page will change from 50 to 20.
