[snowpanda]

>they don't support open protocols including SMTP

>they could easily siphon off plaintext at the SMTP level

This doesn't make any sense.

[Sir_Cmpwn]

They don't support realying their user's outgoing mail through SMTP. They have to support server-to-server SMTP to receive incoming mail. The latter is where they encrypt incoming emails, but they could just as easily store the plaintext and you'd never know.

[gruez]

that limits it to the moment the email was received, which is still better than everyone else, where you can read the mail any time in the future.