Great Plugin, but needs native CAPTCHA / anti-spam feature

This plugin is great. Its easy to collect subscribers via the signup form, sending emails/newsletters works without bouncebacks, seeing stats on opens/clicks is clear and easy to understand, and if you know html then writing emails is a breeze.

One major downside is that there is no native CAPTCHA/anti-spam field for the sign up form which allows all kinds of spam subscribers to fill your subscriber list. Would rate 5/5 if a signup form field was added to enter your site’s Google reCAPTCHA key or hCAPTCHA key.