Did you guys know that NetSuite uses Opportunistic TLS? on all of their email services.. and they are deprecating 3rd party SMTP integrations after the 2019.2 release. What this means is that if you have compliance needs and your communications via NetSuite email systems(cases, saved searches etc) contain PII or other sensitive information and the domain of the recipient does not have any TLS services.. -> NetSuite will send out the message with zero encryption and in plain text format.