I just installed your plugin and so far it works great: all emails are going into Inbox, and the autoresponder works like a charm! Because it works so fine, I think I will import my MailChimp user list here, and I'll buy the Pro Version to fine tune the sending interval (shared hosting).
However, I noticed something: I use the double-opt in system and when I click the link to confirm the subscription, I am taken to the home page and I see no message telling me that I was successfully subscribed to the newsletter. The same problem appears when I unsubscribe from the mailing list, I am taken to the home page but there's no message that will notify me that I was unsubscribed. Am I doing something wrong or this is a premium feature?