$From :
Email address this email was sent from.
$To :
Email address this email was sent to.
$Date :
Date the email was submitted.
$Status :
Value of email's status
$StatusName :
Name of email's status
$StatusChangeDate :
Date of last status change.
$DateSent :
Date when the email was sent
$DateOpened :
Date when the email changed the status to 'opened'
$DateClicked :
Date when the email changed the status to 'clicked'
$ErrorMessage :
Detailed error or bounced message.
$TransactionID :
ID number of transaction