I would like to ask what happens when an email is sent from gmail, yahoo or hotmail public web email services?
I don't understand email protocols in details, but as far as I know email traffic is unencrypted and the messages are passed along many mail servers (in plain text) before reaching their destination server. However, this was questioned recently by other people, and their view was that if one of the big providers is used, the email messages are encrypted and there is no need to worry about security.
Do you know if they are right about this and are emails moderately secure? Thank you!