Action: MailboxStatus
Synopsis: Check Mailbox
Privilege: call,all
Description: Checks a voicemail account for status.
Variables: (Names marked with * are required)
       *Mailbox: Full mailbox ID <mailbox>@<vm-context>
       ActionID: Optional ActionID for message matching.
Returns number of messages.
       Message: Mailbox Status
       Mailbox: <mailboxid>
       Waiting: <count>

Example: