Pear Mail Queue - logs/records?

I am using Pear Mailer and the Mail Queue to send开发者_开发问答 emails. Is it possible to keep the record of each mail in the mail_queue table rather than it being deleted as soon as it is sent?

It would be useful to track the mail for debugging.

Many thanks,

Chris

Read the section "Utilising Callbacks for Report Generation" on http://pear.php.net/manual/en/package.mail.mail-queue.mail-queue.tutorial.php.
All you have to do is (copy it and) implement the function insert_to_log to write the data in a separate log table.