*
* TIMESTAMP: The time_t value corresponding to the message's
* Date header.
*
* MESSAGE_ID: The unique ID of the mail mess (see "id" above)
*
*
* TIMESTAMP: The time_t value corresponding to the message's
* Date header.
*
* MESSAGE_ID: The unique ID of the mail mess (see "id" above)
*
* In addition, terms from the content of the message are added with
* "from", "to", "attachment", and "subject" prefixes for use by the
* user in searching. Similarly, terms from the path of the mail
* In addition, terms from the content of the message are added with
* "from", "to", "attachment", and "subject" prefixes for use by the
* user in searching. Similarly, terms from the path of the mail