10. Checking encryption is enabled on sent emails

In this video, we send and receive emails to and from 3rd party (external) email services to confirm that we can reach external providers, and we take a look at how we can check that the sent emails were encrypted using STARTTLS. It is very important to confirm STARTTLS is enabled, because it is added on-the-fly, and because port 25 and 143 can also behave unencrypted, so we must check.