First, keep up the goodwork. Thanks a lot, this is the best newsletter plugin I have ever used.
This plugin should be better if it has the following features:
1. An option to export subscriber list.
2. An option to create different subs. list.
3. A shortcode to use subscription form in posts or pages. (You can insert the form in several ways. You can display the form but the submit button won't function... Tried several times...)
4. An option for localization... for the feedbacks of widget...