The following information is displayed on the Usage tab.
| Property | Description | 
|---|---|
| Last login | Last time this mailbox was logged in to. This is determined during synchronization and cannot be edited. | 
| Last logout | Last time this mailbox was logged out of. This is determined during synchronization and cannot be edited. | 
| Last logged in user account | Name of the user account that was used for the last login. This data is determined through synchronization and cannot be edited manually. | 
| Storage limit status | Information about the current storage state with respect to the specified limits. This data is determined through synchronization and cannot be edited manually. | 
| Number of saved messages | Stored message count This data is determined through synchronization and cannot be edited manually. | 
| Associated items count | Number of associated elements in this mailbox. This is determined during synchronization and cannot be edited. | 
| Used disk space [byte] | Used disk space in bytes. This data is determined through synchronization and cannot be edited manually. | 
| Recoverable items count | Number of items in the Recoverable items folder. This data is determined through synchronization and cannot be edited manually. | 
| Size of recoverable items | Size of messages in the Recoverable items folder. This data is determined through synchronization and cannot be edited manually. | 
| Use default database values | Specifies whether the mailbox database limits are used. This data is determined through synchronization and cannot be edited manually. Option set: Mailbox database limits are in use. Option not set: Mailbox database limits are not in use. | 
| Max. recoverable items | Maximum number of messages allowed in a folder in the Recoverable items folder. This data is determined through synchronization and cannot be edited manually. | 
| Warn at [recoverable items] | Number of items a folder in the Recoverable items folder can contain before a warning is sent to the user. This data is determined through synchronization and cannot be edited manually. | 
| Keep deleted items [days] | Number of days the deleted objects (email message for example) remain on the server before being removed. | 
| Rules quota [KB] | Limit on the number of rules. | 
| Prohibit transfer at [KB] | Size of mailboxes in KB above which, sending, and receiving messages is prohibited. | 
| Prohibit send at [KB] | Size of mailboxes in KB above which, sending messages is prohibited. If this size is exceeded the user is sent a message that messages must be deleted in the archive mailbox. The user is not able to send more messages until the size of the mailbox has been reduced. | 
| Warn at [KB] | Maximum size in MB of the mailbox. If this size is exceeded the user is sent a warning that messages must be deleted in the archive mailbox. | 
