Good afternoon Eventualo,
This time I haven't got a new patch; instead, I've got a feature request :).
I would like to add two new features to your plugin:
1) Custom user meta fields. In order to request user birth date, a comment or something else.
2) A special feature to the mailing lists; something that responds to this question: when would you like to send this Newsletter? I would like to send it every time that user meta field "date_of_birth" === CURR_DATE, or I would like to send it now if "likes_cheese" === TRUE (or both!).
Can you see the potential of such feature? :)
I suppose that the first option should be added to the "options" section (maybe checking if this must be a required field or not). The last one could be set when we create the list of recipients or set as "Filter subscribers according to custom fields...", but I'm not sure at all.
The problem is that I'm not sure where to start "playing" without breaking any current feature. Because of that I'm writing here, in order to get some advice from eventualo or other developers in that forum to let this done.
Keep waiting your response ;).