"I got a shotgun, a rifle, and a four wheel drive and country boy can survive."-- Hank Williams, Jr.
Think your email is 'private' because you use Outlook, or some other client? Wrong. Your email is stored in backup format on the email servers you use and mirrored as well. It's for your protection don'cha know? {yea, right} On the networks >I< ran email was mirrored to a secondary server by order of the executive committee. And that was simply at a corporate level. EVERYTHING, in or out, was tracked and copied. soasots
Telnet onto a router, access email via Pop/smtp on CLI. Send emails never even attached to an email address.
Otherwise, get outlook; configure for pop and SSL on email server and in outlook, then remove check fom box "leave a copy of messages on server"; configure inbox path to receive at a USB or SD card. If need ever be, snap the storage device. Emails gone.
No, there's not a copy only you configure one or a recovery server of some kind is being used, which isn't common. How do I know this so assuredly? I get paid to tell people "I'm sorry, there is no copy of your email in our server because you had it set for pop and configured not to leave a copy."
Wireshark so yummy. Can read your data as its captured during flow. Also can clamp cross talk skimmer to UTP cables and literally watch what is going through. SSL will make it hard to read. Encryption is love.
And by the way, the reason your email provider likely does not keep emails after you delete them is incredibly simple. How much more storage space would an email server need if it kept copies? The model would have to grow with both customer base and time.