mail tracking is an event driven, generic package to track outgoing emails from acs-mail-lite.

As soon as an email was sent out and is deleted from the queue mail-tracking creates a new record.

Two modes are available:

Tracking everything - When the TrackAllMails parameter is set to 1 all outgoing mails are tracked.
Tracking on package instance level - If set to 0, a site-wide admin can track single package instances. In order to do so the package id is required.

To track a package instance simple add the following link inside an admin tcl page of your package:

    set tracking_chunk [mail_tracking::display::request_widget \
        -object_id $package_id \
        -url [ad_conn url] \
    ]

and this to the corresponding ADP page:

    \@tracking_chunk;noquote\@

There are some limitations that a future package might fix:

Since not all emails are sent from acs-mail-lite we cannot track everything.
acs-mail-lite stores the email address of the sender. Thus the sender can be an unregistered and therefore unknown user.
Requesting tracking on the package instance level has no meaning if the track all mails mode is active.