Hi again 
I was wondering how can I import values inside a checkbox custom field via a .csv file.
I'll explain myself: I have a .csv file with subscribers from another site (on which there wasn't your Newsletter plugin, not being a Wordpress site), in which there are values for a custom field identical to the field I created on your plugin, for my new mailing lists.
The problem is, I can import all other values to my mailing list, except for this custom field. I selected the right column, I edited my csv file to be exactly like a Newsletter export file for third party software, but I can't get the custom field values to be imported correctly, or be imported at all.
Can someone help me on this matter? I don't want to lose those values.
-Francesco Seu