I know we've made some updates/improvements in the firmware related to email support. Have you tried some newer firmware?
Our 9.5 feature set (with support for nested subroutines and the RESTful API/webserver) is super awesome!
FYI - when it comes to things like https and email (which also requires security/certificates), the bad guys keep finding ways to hack into everything so updates are inevitable. Darn bad guys.