The default settings shows you 50 e-mails on each page in every folder to prevent long
loading screens at your mailbox. You can change the amount of e-mails shown. You can view up to 300 e-mails on
each page.
Info:
The more e-mails you view per page, the longer the page
takes to load. For technical reasons, you can only view up to 100 e-mails per
page in Internet Explorer.
Move your mouse over the appropriate folder and click the wrench
icon.