The plugin is good but it should have more facilities as described below. Because without these facilities, the plugin is less superior than contact form-7 and others.
- All the fields are associated with CSS class, name and ID of element.
- In front of these the non-technical meaning should be given. This will make easy for those who are rather poor or beginners in using these things.
- Recaptcha contains two keys public and private. The user must be confronted with what are their uses. This is, I think the liability of the plugin designer.
- The plugin designer must think about that user first, who is completely GREEN in using it.
- That last suggestion will definitely improve its utility.
- Else best of luck for the popularity.