Needs room for improvement

The plugin is simple and easy to use. Maybe it would be better if it had the ability to add more fields except name, email and phone.

But I’ve found an issue though.
The developer should consider using $wpdb->prefix when making calls to the database.

I had to change the code in the following files to make it work with table prefixes:

• wp-great-newsletter\wp-great-newsletter.php at line 236.
• wp-great-newsletter\includes\process-suscribe-form.php at line 10 (yes the name of this file has a typo, e.g. suscribe).
• wp-great-newsletter\includes\process-unsuscribe-form.php at line 8.