I’ve had a similar problem. My test e-mails all appear in the spam folder. I have no subscribers besides myself and that’s the only email I’m testing at the moment. I check on MXtoolboxed and my domain is blacklisted (!?), so I’m working with them to have that checked out. In the interim, I created a Mandrill account and changed all the smtp details. Unfortunately this has not helped and my test emails continue to appear in the spam folder. Any suggestions how I can prevent my test emails appearing in the spam folder?