Changing hosted Exchange user mailbox sizes:

1. Click on the User for which you want to change the mailbox size.
2. A new “User Info” window opens up.
3. Scroll down and locate “Exchange Info”.
4. From the Drop Down select the relevant plan.

If you do not wish to upgrade to another plan then you can buy additional space by selecting relevant MB’s from drop down list present under “Extra Mailbox Space”.

5. Click on Update.

Related Links :

SharePoint Hosting Services with Control Panel

Hosted Exchange with Control Panel

Hosted Apps – Exchange SharePoint

Microsoft Office SharePoint Server 2007

Hosted Exchange SharePoint Services

Free WSS 3.0 Hosting Application Templates