Feature suggestions to the Subscribe by Mail plugin

Hi,

I have three feature suggestions for the Subscribe by Mail plugin:

1) In the backend, I would like to see more filters added, so the user can choose between confirmed and unconfirmed emails adresses. That will make it much easier to administrate :slight_smile:

2) I would like to see some kind of captcha feature added to the plugin to avoid spam subscriptions. You could try to add a honeypot feature or hidden field to accomplish this.

3) I would like to see an error message added to the subscribe form, so that if a user tries to add an email address which has also been already added they will get an error or message saying "The email address is already subscribed" or something alike.

Sincerely,
Mika Kaltoft
RocaPress