Mozilla Help
Checking Quota
Right-click on your Inbox.
In the menu, select "Properties..."
In the window that pops up, click on the "Quota" tab.
Your mail disk usage and quota will be displayed.
Click the "OK" button.
Marking Messages as Read
Select the messages you want to mark as read.
In the menu bar, click on "Message".
Select "Mark".
Click on "As Read".
Subscribing to Folders
Right-click on your Inbox.
In the menu, select "Subscribe..."
If you have nested folders, click on the "+" by each folder to see
subfolders.
Click on the box beside each folder you want to subscribe to, so that the
box shows a check mark.
When you have checked every box you want to subscribe to, click on the
"Subscribe" button.
click the "OK" button.
