
I have developed a plugin that gives open & bounce statistics for a message. Also shows you exactly who has viewed the message (and who hasn't...as far as it's possible to tell). It only works for HTML messages - it's not possible to know who opened text messages.
To enable open statistics you need to put the placeholder [USERTRACK] somewhere in your HTML message. A good idea is to put it in your default message footer via the configure page. See this topic.
Installation
Download the plugin as a zip file here.
To install, delete all the current contents of lists/admin/plugins. Unzip the plugins.zip file, being careful to keep the directory structure intact & copy all the files to lists/admin/plugins. That's it.
You will need to know the message id for the message you want info on. You can get this from the "messages" page - click "view" on the message you're interested in. If you're feeling brave you can download a modified version of lists/admin/messages.php here in zip form. This displays a link to the correct statistics directly next to the message.
Hope this is useful. If anyone improves it, please post the improvements here. Hopefully it will be superseded by a native stats module sometime in the future.