There appears to be a problem with our actual mail server as the emails aren't even getting to the junk folderMake sure you use something along the lines of MandrillApp for sending emails (it supports smtp and signed emails) that way you dont end up in spam filters by accidents.
It appears that's more marketing based? Or regular every day emails?I still swear by mandrill as a service. Have since i started using it in IP.Board, and i took it with me over to XF.