I just recently noticed that none of the e-mails were getting sent out. It worked when I first installed the plugin about a month or so ago. I fiddled with all the settings making sure everything was accurate but can only get it to send out the test e-mail when the mailer option is switched from "Send all WordPress emails via SMTP" to "Use the PHP mail() function to send emails."
Is this supposed to happen? Anyone else getting this problem?